Whaps is the plural or third-person singular of whap—a sharp blow or the sound it makes.
To whap is to strike with a quick, forceful motion: She whaps the fly with a rolled-up newspaper.
The word is onomatopoeic, evoking the sound of impact.
Also spelled waps.
1. impact — smack, Strike with open hand; thwack (Sharp striking sound); wallop (Forceful strike or defeat); whack (Forceful striking blow); thump · slam · bash · bang · crash · collision · blow · strike · hit · knock
2. light — tap, Valve controlling liquid flow; pat (Gentle palm stroke); flick (Brief, sharp motion); swat (Hit something sharply); slap · rap · dab · nudge · poke · prod · cuff · clip · spank · box