Pronunciation: (hwak, wak),[key] —v.t. 1. to strike with a smart, resounding blow or blows.
2. Slang.to divide into or take in shares (often fol. by up): Whack the loot between us two.
—v.i. 1. to strike a smart, resounding blow or blows.
2. whack off, a. to cut off or separate with a blow: The cook whacked off the fish's head. b. Slang(vulgar). to masturbate.
3. whack out,Slang.to produce quickly or, sometimes, carelessly: She whacks out a short story every week or so.
—n. 1. a smart, resounding blow: a whack with his hand. 2. Informal.a trial or attempt: to take a whack at a job. 3. Slang.a portion or share.
4. out of whack,Informal.out of order or alignment; not in proper condition.