Толковый словарь английского языка - whack

I. verb Etymology: probably imitative of the sound of a blow Date: 1719 transitive verb 1. to strike with a smart or resounding blow , to cut with or as if with a ~ ; chop, to get the better of ; defeat, murder, kill, intransitive verb to strike a smart or resounding blow, ~er noun II. noun Date: 1736 1. a smart or resounding blow, a critical attack, portion, share, condition, state, 4. an opportunity or attempt to do something , a single action or occasion