What's the difference between jack and lack?

Jack


Definition:

  • (n.) A large tree, the Artocarpus integrifolia, common in the East Indies, closely allied to the breadfruit, from which it differs in having its leaves entire. The fruit is of great size, weighing from thirty to forty pounds, and through its soft fibrous matter are scattered the seeds, which are roasted and eaten. The wood is of a yellow color, fine grain, and rather heavy, and is much used in cabinetwork. It is also used for dyeing a brilliant yellow.
  • (n.) A familiar nickname of, or substitute for, John.
  • (n.) An impertinent or silly fellow; a simpleton; a boor; a clown; also, a servant; a rustic.
  • (n.) A popular colloquial name for a sailor; -- called also Jack tar, and Jack afloat.
  • (n.) A mechanical contrivance, an auxiliary machine, or a subordinate part of a machine, rendering convenient service, and often supplying the place of a boy or attendant who was commonly called Jack
  • (n.) A device to pull off boots.
  • (n.) A sawhorse or sawbuck.
  • (n.) A machine or contrivance for turning a spit; a smoke jack, or kitchen jack.
  • (n.) A wooden wedge for separating rocks rent by blasting.
  • (n.) A lever for depressing the sinkers which push the loops down on the needles.
  • (n.) A grating to separate and guide the threads; a heck box.
  • (n.) A machine for twisting the sliver as it leaves the carding machine.
  • (n.) A compact, portable machine for planing metal.
  • (n.) A machine for slicking or pebbling leather.
  • (n.) A system of gearing driven by a horse power, for multiplying speed.
  • (n.) A hood or other device placed over a chimney or vent pipe, to prevent a back draught.
  • (n.) In the harpsichord, an intermediate piece communicating the action of the key to the quill; -- called also hopper.
  • (n.) In hunting, the pan or frame holding the fuel of the torch used to attract game at night; also, the light itself.
  • (n.) A portable machine variously constructed, for exerting great pressure, or lifting or moving a heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, which is a kind of jack.
  • (n.) The small bowl used as a mark in the game of bowls.
  • (n.) The male of certain animals, as of the ass.
  • (n.) A young pike; a pickerel.
  • (n.) The jurel.
  • (n.) A large, California rock fish (Sebastodes paucispinus); -- called also boccaccio, and merou.
  • (n.) The wall-eyed pike.
  • (n.) A drinking measure holding half a pint; also, one holding a quarter of a pint.
  • (n.) A flag, containing only the union, without the fly, usually hoisted on a jack staff at the bowsprit cap; -- called also union jack. The American jack is a small blue flag, with a star for each State.
  • (n.) A bar of iron athwart ships at a topgallant masthead, to support a royal mast, and give spread to the royal shrouds; -- called also jack crosstree.
  • (n.) The knave of a suit of playing cards.
  • (n.) A coarse and cheap mediaeval coat of defense, esp. one made of leather.
  • (n.) A pitcher or can of waxed leather; -- called also black jack.
  • (v. i.) To hunt game at night by means of a jack. See 2d Jack, n., 4, n.
  • (v. t.) To move or lift, as a house, by means of a jack or jacks. See 2d Jack, n., 5.

Example Sentences:

  • (1) A remarkably close relationship was found between both H. pylori urease subunits and jack bean (Canavalia ensiformis) urease, the subunit of which is a single 840 amino acid polypeptide.
  • (2) In 0.17 M Na+(aq), tRNA(Phe) exists in its native conformation and the number of strong binding sites (Ka greater than or equal to 10(4)) was estimated to be 3-4 by titration experiments, in agreement with X-ray structural data for crystalline tRNA(Phe) (Jack et al., 1977).
  • (3) Jack Straw, foreign secretary at the time of the Iraq war, took a less dramatic view.
  • (4) precursor phaseolin) is incubated with jack bean alpha-mannosidase show that the high mannose glycan on Asn252, but not the one on Asn341, is susceptible to enzyme degradation.
  • (5) "My wonderful, brave and adored father, Jack Ashley, Lord Ashley of Stoke, has died after a short battle with pneumonia."
  • (6) 9.31am BST Jack Straw , the Labour former home secretary, was on the Today programme earlier talking about the "plebgate" affair.
  • (7) This communication reviews the almost 40 years of studies by Jack Metcoff, MD, and coworkers to unravel the causes of fetal malnutrition and their efforts to prevent it.
  • (8) "Most of the grain produced on our farm ends up bound for export," said Jack McCormick, who raises beef cattle and grain with his father.
  • (9) Jack Straw's detailed blueprint for a 300- strong, wholly elected upper chamber to replace the Lords appears to have been blocked at the last minute following resistance in cabinet.
  • (10) His opposite number, Roy Carroll, saved at the feet of Sinclair, the County striker Izale McLeod drove inches wide, but in the 24th minute Villa were level, Jack Grealish dancing through a series of attempted tackles before putting the ball on a plate inside the penalty area for the hugely promising Adama Traoré to thump past Carroll.
  • (11) The manager added that City would also be without Kolo Touré, Abdul Razak and Jack Rodwell, who has a hamstring problem.
  • (12) Comment is free contributor Jack Monroe made the Guardian shortlist and got one commenter's You Tell Us award for Outstanding Excellence in the field of Talking Sense .
  • (13) The link between the conditions has not yet been discovered, but here Jack Wall and colleagues develop the theory that an autoimmune response to a 64 kDa antigen expressed on both thyroid and eye muscle membranes is responsible for this thyroid-associated ophthalmopathy.
  • (14) Fellow co-founder Jack Dorsey could make around half that.
  • (15) Other high-profile absentees include Danny Welbeck, Jack Wilshere, Luke Shaw and Jordan Henderson.
  • (16) Onerous new regulations could threaten the shale energy revolution, America’s role as a global energy superpower, and the dramatic reductions in CO2 emissions made possible by an abundant and affordable domestic supply of clean-burning natural gas,” Jack Gerrard, president of the American Petroleum Institute, said in a statement.
  • (17) The American has not secured a major title since Torrey Pines for the 2008 US Open and, while overhauling Jack Nicklaus's record total of 18 majors was once a matter of "when", it is now very much a case of "if".
  • (18) By N-terminal analysis, the 29.5-kDa subunit of H. pylori urease was found to share significant amino acid sequence similarity with the smallest of three subunits of the Proteus mirabilis and Morganella morganii ureases, as well as to the amino terminus of the unique jack bean subunit.
  • (19) Outside-funded overseas travel was also declared, including a visit to the Paris Air show for the Tory MP Jack Lopresti and his researcher, paid for by the global missile company MBDA.
  • (20) Even Jack Straw is trying to close down some of its overripe practices.

Lack


Definition:

  • (n.) Blame; cause of blame; fault; crime; offense.
  • (n.) Deficiency; want; need; destitution; failure; as, a lack of sufficient food.
  • (v. t.) To blame; to find fault with.
  • (v. t.) To be without or destitute of; to want; to need.
  • (v. i.) To be wanting; often, impersonally, with of, meaning, to be less than, short, not quite, etc.
  • (v. i.) To be in want.
  • (interj.) Exclamation of regret or surprise.

Example Sentences:

  • (1) Here we have asked whether protection from blood-borne antigens afforded by the blood-brain barrier is related to the lack of MHC expression.
  • (2) tRNA from mutant IB13 lacks 5-methylaminomethyl-2-thio-uridine in vivo due to a permanently nonfunctional methyltransferase.
  • (3) BL6 mouse melanoma cells lack detectable H-2Kb and had low levels of expression of H-2Db Ag.
  • (4) Treatment termination due to lack of efficacy or combined insufficient therapeutic response and toxicity proved to be influenced by the initial disease activity and by the rank order of prescription.
  • (5) In the past, the interpretation of the medical findings was hampered by a lack of knowledge of normal anatomy and genital flora in the nonabused prepubertal child.
  • (6) A diplomatic source said the killing appeared particularly unusual because of Farooq lack of recent political activity: "He was lying low in the past two years.
  • (7) The present study examined whether the lack of chronic hemodynamic effects of ANP in control rats was due to changes in vascular reactivity to the peptide.
  • (8) Since it was established, it has stoked controversy about contemporary art, though in recent years it has been more notable for its lack of sensationalism.
  • (9) Inadequate treatment, caused by a lack of drugs and poorly trained medical attendants, is also a major problem.
  • (10) Because of the small number of patients reported in the world literature and lack of controlled studies, the treatment of small cell carcinoma of the larynx remains controversial; this retrospective analysis suggests that combination chemotherapy plus radiation offers the best chance for cure.
  • (11) I would immediately look askance at anyone who lacks the last and possesses the first.
  • (12) The detection of these antibodies is difficult owing to the lack of standardization and of specificity of the laboratory tests.
  • (13) Core enzyme, lacking omega subunit, catalyzed this reaction at a rate less than 1% that of holoenzyme.
  • (14) But not only did it post a larger loss than expected, Amazon also projected 7% to 18% revenue growth over the busiest shopping period of the year, a far cry from the 20%-plus pace that had convinced investors to overlook its persistent lack of profit in the past.
  • (15) Urine specimens from patient REE also contained a light chain fragment that lacked the first (amino-terminal) 85 residues of the native light chain but otherwise was identical in sequence to the light chain REE.
  • (16) Thus the failure to raise anti-Id with internal image characteristics may provide an explanation for the lack of anti-gp120 activity reported in anti-Id antisera raised to multiple anti-CD4 antibodies.
  • (17) His walkout reportedly meant his fellow foreign affairs select committee members could not vote since they lacked a quorum.
  • (18) In South Africa, health risks associated with exposure to toxic waste sites need to be viewed in the context of current community health concerns, competing causes of disease and ill-health, and the relative lack of knowledge about environmental contamination and associated health effects.
  • (19) The functional capacity to present antigens to T cells was lacking in normal resting B cells, but was acquired following LK treatment.
  • (20) These findings indicate an association between HLA-B7 and ankylosing spondylitis in American blacks and suggest that these patients who lack B27 but possess B7 represent a subgroup of patients with this disease.