O.E. beofor (earlier bebr), from P.Gmc. *bebruz (cf. O.N. biorr, Low Ger. bever, O.H.G. bibar), from PIE *bhebhrus, reduplication of base *bhru- "brown" (cf. Lith. bebrus, Czech bobr, Welsh befer; see
bear (n.) for reason for this). Gynecological sense ("female genitals, especially