(v. i.) To make a low, hoarse noise in the throat, as a frog, a raven, or a crow; hence, to make any hoarse, dismal sound.
(v. i.) To complain; especially, to grumble; to forebode evil; to utter complaints or forebodings habitually.
(v. t.) To utter in a low, hoarse voice; to announce by croaking; to forebode; as, to croak disaster.
(n.) The coarse, harsh sound uttered by a frog or a raven, or a like sound.
Example Sentences:
(1) The first two experiments imply that stimulation of the skin of the trunk initiates the release croak; Experiments 3 and 4 suggest that an internal afferent source inhibits the release croak and might mediate an important aspect of receptivity in female frogs.
(2) The cathartic moment, in which the king realises he's OK and lovable just as he is, was wonderful for the film-makers to discover, and has been wonderful for worldwide audiences ever since (and the king doesn't die… he merely "croaks").
(3) Poppies in the long grass, frogs croaking for mates, wasps droning lazily at the window, tomatoes and strawberries ripening in garden pots and crickets buzzing at dusk: these are the sights and sounds of an English summer.
(4) We are all getting older thanks to better living conditions, and the French are way older than they have any right to be considering their diet, but the dependable Swedes who have always been goody-goodies are still croaking in their 80s, so most of us will have to settle for that.
(5) And so they hardly ever leave a flat in which, thanks to the croaking boiler, the temperature hovers around 10 degrees.
(6) With drugs, oblivious, in a basement, frozen nobly on a mountain top, screaming in a car crash, or traditionally in a bed surrounded by our family and children, croaking out our last wishes?
(7) "Intelligent tadpoles reconcile themselves to the inconvenience of their position by reflecting that although most of them will live to be tadpoles and nothing more, the most fortunate of the species will one day shed their tails, distend their mouths and stomachs, hop nimbly on to dry land and croak addresses to their former friends on the virtue by which tadpoles of character and capacity can rise to be frogs."
(8) Three decades later, in July 2011, to watch a slightly pasty, croaking, self-styled "humble" Murdoch appear before a televised committee of suddenly irreverent MPs was to see something dragged out into the light: a power relationship that would never be quite the same again.
(9) Talked a lot about Under Milk Wood: how he came to London in 1953, with a fiver in his pocket, and went in search of Dylan Thomas in the Soho and Fitzrovia pubs, only to find that he had just croaked in New York.
(10) But as the fearless Ali strutted on, inventing new ways, new scenes, new angles, new endings, those croaking pronouncements of veterans petered out.
(11) The only MacTaggarts regularly recalled with relish are those in which all-powerful television grandees were venomously slagged off in public - Dennis Potter's attack on the then BBC director general John Birt as a "croak-voiced Dalek" in 1993, and Michael Grade's escalation of his own feud with Birt the previous year.
(12) I learn to distinguish the croaks of the marsh frog from the scratchy cry of the reed warbler and watch brightly coloured damselflies darting about in the bullrushes.
(13) This report investigates the sources of stimuli which initiate and inhibit the release croak of Rana pipiens.
(14) It can be a surprisingly noisy place, what with the barking of the muntjac deer, the croaking of the frogs, the quacking of the widgeons … Look and listen out for Faint lights near the ground, especially in June and July.
(15) Cool off after a hot day on the beach in the natural swimming pond, complete with lily pads and croaking frogs.
(16) At the moment the city also sounds like seagulls croaking at each other from outside my window from about 3am every morning.
(17) Roger no longer expresses a desire to croak it prematurely although he is 69 years old now and back on the road.
(18) Even if it was in a husky croak, and I couldn't manage the chorus.
(19) There was no trace of human life, only the croak of a raven and a trickling stream.
(20) The pectoral fin of the croaking gourami, Trichopsis vittatus, has become modified as a sound-producing organ and retains its original function in locomotion and hovering.
Croaker
Definition:
(n.) One who croaks, murmurs, grumbles, or complains unreasonably; one who habitually forebodes evil.
(n.) A small American fish (Micropogon undulatus), of the Atlantic coast.
(n.) An American fresh-water fish (Aplodinotus grunniens); -- called also drum.
(n.) The surf fish of California.
Example Sentences:
(1) The spotted seatrout GTH beta-subunit was used as radioligand in a radioimmunoassay (RIA) with Atlantic croaker (Micropogonias undulatus) GTH antiserum.
(2) The involvement of active inorganic ion transport and Na+,K(+)-ATPase in oocyte hydration in Atlantic croaker (Micropogonias undulatus) and spotted seatrout (Cynoscion nebulosus), marine teleosts which spawn pelagic eggs, was investigated by examining changes in the inorganic ion content of ovarian follicles containing mainly oocytes, by performing in vitro incubations of the follicles with ion channel blockers, and by assaying membrane preparations of ovaries containing hydrating and non-hydrating oocytes for Na+,K(+)-ATPase activity and content.
(3) Spermatozoa of Atlantic croaker diluted in either NaCl or sodium citrate solutions with or without DMSO were examined with the electron microscope before freezing in liquid nitrogen and after thawing.
(4) Antiserum to croaker maturational gonadotropin, which recognizes two distinct gonadotropins in sciaendis, bound strongly and specifically to the gonadotrops.
(5) The effects of several mammalian reproductive toxins on reproductive endocrine function in female Atlantic croaker (Micropogonias undulatus) were examined.
(6) Proteinase II, a high-molecular-mass proteinase previously identified in white croaker skeletal muscle, was purified to apparent homogeneity by DEAE-Sephacel, phenyl-Sepharose CL 4B, and Sephacryl S-300 chromatographies.
(7) The spermatozoon of the Atlantic croaker (Micropogonias undulatus) is a primitive type in that it lacks an acrosome.
(8) Ovarian tissue in the process of FOM was removed from Atlantic croaker (Micropogonias undulatus) and incubated with human chorionic gonadotropin (hCG) and pregnenolone in tissue culture medium for 8 hr.
(9) The alkaline proteinase showing pH optimum 8.0 from white croaker (Sciaena schlegeli) skeletal muscle was purified electrophoretically homogeneously (2000-fold) using a combination of DEAE-cellulose chromatography, hydroxylapatite chromatography and Ultrogel AcA 34 gel filtration.
(10) The effect of in vitro exposure to tributyltin (TBT) on the chemiluminescent (CL) responses of kidney macrophages was examined in oyster toadfish (Opsanus tau), hogchoker (Trinectes maculatus) and Atlantic croaker (Micropogonias undulatus).
(11) Fractions were bioassayed for their potency to induce GVBD of Atlantic croaker oocytes in vitro.
(12) Full-grown oocytes of Atlantic croaker are insensitive to maturation-inducing steroid (MIS) unless they are primed with gonadotropin (GtH).
(13) Pituitary extracts and plasmas from a variety of sciaenid fishes diluted parallel to the croaker GTH standard in the RIA.
(14) These findings strongly suggest that 20 beta-S is the terminal product of the MIS biosynthetic pathway in Atlantic croaker ovaries.
(15) All the steroids produced by Atlantic croaker ovaries during final oocyte maturation (FOM) were assayed for their ability to induce germinal vesicle breakdown (GVBD) of croaker oocytes in vitro.
(16) Based upon observations of a high prevalence of skin neoplasms near the discharge point for kraft pulp mills, experiments were conducted to determine the neoplastic induction efficiency of the effluent on the croaker and sea catfish species.
(17) These results provide further evidence that 20 beta-S is a major maturation-inducing steroid in Atlantic croaker.
(18) The objective of this study was to examine the mechanism of GtH-induced maturational competence in croaker oocytes.
(19) The contribution of environmental chemicals to the cause of chromatophoroma in the feral croaker is considered likely on the basis of the following results in our studies.
(20) A croaker (Nibea mitsukurii) has a high incidence of the skin melanoma, chromatophoroma, in a Pacific coastal area in Japan.