1a sharp or resounding blow:with a few whacks and some loud whistles, they drove the animals away
2a try or attempt:we decided to take a whack at spotting the decade’s trends
3British a specified share of or contribution to something:motorists pay a fair whack for the use of the roads through taxes
4North American a large quantity or amount.
ზმნა
Universal
[with object] strike forcefully with a sharp blow:his attacker whacked him on the head [no object]:she found a stick to whack at the branches
defeat in a contest: [with object and complement]:the team were whacked six-nil
[with object and adverbial] put or push (something) roughly or carelessly in a specified place or direction:he whacks a tape into the cassette recorder
North American murder:he was whacked while sitting in his car
out of whack
North American & Australian/NZ out of order; not working:all their calculations were out of whack
top (or full) whack
chiefly British the maximum price or rate:the car has a top whack of 107 mph
