出典:Wiktionary
From Middle English frossh, frosch, from 古期英語 frosc, from Proto-Germanic *fruskaz (“frog”), from Proto-Indo-European *prew- (“to jump, hop”). Cognate with West Frisian froask (“frog”), Dutch vors (“frog”), German Frosch (“frog”), Norwegian frosk (“frog”), Icelandic froskur (“frog”). Doublet of frosk; more at frog.
frosh (複数形 froshes)