whack

Noun	1.	whack - the sound made by a sharp swift blow sound - the sudden occurrence of an audible event; "the sound awakened them"
	2.	whack - the act of hitting vigorously; "he gave the table a whack" whang, knock, rap, belt blow - a powerful stroke with the fist or a weapon; "a blow on the head"
Verb	1.	whack - hit hard; "The teacher whacked the boy" wallop, wham, whop hit - deal a blow to, either with the hand or with an instrument; "He hit her hard in the face"

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