WebWhacker whack (hwak, wak) v. whacked, whack-ing, whacks tr. To strike (someone or something) with a sharp blow; slap. intr. To deal a sharp, resounding blow. phrasal verb. whack off. Vulgar Slang. To masturbate.
WebWhacker
whack (hwak, wak) v. whacked, whack-ing, whacks