beret

Borrowed from French béret, from Occitan (Gascon) berret (“cap”), from Old Occitan berret, from Medieval Latin birretum, from Late Latin birrus (“large hooded cloak”), from Gaulish birrus (“short cloak”), from Proto-Celtic *birros (“short”) (compare Welsh byr, Middle Irish berr). Compare biretta.

出典: Wiktionary「beret」（CC BY-SA 4.0）