definition of
wallop

[1] #1 wallop v. [whack, wham, whop] hit hard; "The teacher whacked the boy". wn

[2] #2 wallop v. defeat soundly and utterly; "We'll wallop them!". wn

[3] #3 wallop n. [impact] a forceful consequence; a strong effect; "the book had an important impact on my thinking"; "the book packs a wallop". wn

[4] #4 wallop n. a severe blow. wn