(n.) A protuberance; a swelling; a knob; a button; hence, rising ground; a summit. See Knob, and Knop.
(v. t.) To bite; to bite off; to break short.
(v. t.) To strike smartly; to rap; to snap.
(v. i.) To make a sound of snapping.
(n.) A sharp blow or slap.
Example Sentences:
(1) The pH-rate profile for inactivation of the RTEM-1 cysteine beta-lactamase by iodoacetate supports previous evidence [Knap & Pratt (1989) Proteins Struct.
(2) Photograph: Dixe Wills Size: 0.09sq miles Around 5,000 years ago, the community living at the Knap of Howar on Papa Westray crossed over to the Holm of Papay to build a burial cairn in which to lay their loved ones to rest.
(3) I thought this was all fair enough, although surely, I cavilled, if building simulacra of Neolithic houses and learning how to flint knap is our new route to the past, then really the actual monument itself is somewhat besides the point.
(4) On a hot day last week, workers from Poland and Bulgaria were spreading straw across fields of strawberries while the knapped flint of Hoo's several 13th-century churches shone in the sun.
(5) At the village of Knap o'Howar on Papay the bones of domesticated cattle, sheep and pigs have been found alongside those of wild deer, whales and seals, for example, while analysis of human bones from the period suggest that few people reached the age of 50.
Obsidian
Definition:
(n.) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.
Example Sentences:
(1) ‘The job is fun, but should never be more than 40 hours per week’ Veteran game designer Chris Avellone, now co-owner of Obsidian Entertainment, focuses on downscaling.
(2) In Mesoamerica, the Aztec empire promoted a militaristic state ideology and developed extensive trade networks to secure valued materials, including obsidian and exotic and symbolically powerful materials such as the shimmering, iridescent feathers of the quetzal bird.
(3) The victims are splayed on a column at the top of a pyramid, and a priest cracks their ribcage open with an obsidian knife to pluck out their still-beating hearts.
(4) A method for analysis of Ni concentrations in tissues is described, which involves (a) tissue dissection with metal-free obsidian knives, (b) tissue homogenization in polyethylene bags by use of a "Stomacher" blender, (c) oxidative digestion with mixed nitric, sulfuric, and perchloric acids, and (d) quantitation of Ni by electrothermal atomic absorption spectrophotometry with Zeeman background correction.
(5) It will come in three colours: black, grey and obsidian and goes on sale in 2018.
(6) It’s a fun job, but it shouldn’t be an exploitative one Chris Avellone, Obsidian Entertainment The need to appease both parties can lead to blow-outs.