Main Entry: ¹whack

Pronunciation: \ˈhwak, ˈwak\

Function: verb

Etymology: probably imitative of the sound of a blow

Date: 1719

transitive verb 1 a : to strike with a smart or resounding blow <whack the ball> b : to cut with or as if with a whack : chop
2 chiefly British : to get the better of : defeat
3 slang : murder, killintransitive verb : to strike a smart or resounding blow

— whack·er noun