[ wɒp ]
( chiefly N. Amer. also whap ) informal
■ verb ( ~s , ~ping , ~ped ) hit hard.
■ noun a heavy blow or its sound.
↘the regular pulsing sound of a helicopter rotor.
Origin
ME: var. of dialect wap 'strike', of unknown origin.
[ wɒp ]
( chiefly N. Amer. also whap ) informal
■ verb ( ~s , ~ping , ~ped ) hit hard.
■ noun a heavy blow or its sound.
↘the regular pulsing sound of a helicopter rotor.
Origin
ME: var. of dialect wap 'strike', of unknown origin.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004