n. & v.
--n.
1. a each of the upper and lower bony structures in vertebrates forming the framework of the mouth and containing the teeth. b the parts of certain invertebrates used for the ingestion of food.
2 a (in pl.) the mouth with its bones and teeth. b the narrow mouth of a valley, channel, etc. c the gripping parts of a tool or machine. d gripping-power (jaws of death).
3 colloq. a talkativeness; tedious talk (hold your jaw). b a sermonizing talk; a lecture.
--v. colloq.
1. intr. speak esp. at tedious length.
2 tr. a persuade by talking. b admonish or lecture.
Phrases and idioms:
jaw-breaker colloq. a word that is very long or hard to pronounce.
Etymology: ME f. OF joe cheek, jaw, of uncert. orig.