Meaning

noun a forceful consequence; a strong effect

noun a severe blow

verb hit hard

originFrom Middle English wallopen (“gallop”), from Anglo-Norman [Term?], from Old Northern French walop (“gallop”, noun) and waloper (“to gallop”, verb) (compare Old French galoper, whence modern French galoper), from Frankish *wala hlaupan (“to run well”) from *wala (“well”) + *hlaupan (“to run”), from Proto-Germanic *hlaupaną (“to run, leap, spring”), from Proto-Indo-European *klaub- (“to spring,…

Etymology from Wiktionary, CC BY-SA 3.0