See clack in Webster's New World Roget's A-Z Thesaurus II
verb
To make a light, sharp noise:
click, snap. See soundsTo make or cause to make a succession of short, sharp sounds:
brattle, chatter, clatter, rattle. See soundsTo talk volubly, persistently, and usually inconsequentially:
babble, blabber, chatter, chitchat, jabber, palaver, prate, prattle, rattle (on), run on. (Informal) go on, spiel. (Slang) gab, gas, jaw, yak. Idioms: run off at the mouth, shoot the breeze (or bull). See words
noun
A light, sharp noise:
click, snap. See sounds
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