bièvre m (plural bièvres)
From Middle French bievre, from Old French bievre (“beaver”), from Old Frankish *bever, *bibar (“beaver”), from Proto-Germanic *bebruz (“beaver”), from Proto-Indo-European *bʰébʰrus (“beaver”). Akin to Old High German bibar (German Biber (“beaver”)), Middle Dutch bēver (Dutch bever (“beaver”)), Old English beofor (“beaver”). More at beaver.