B / bĭfŏris
adjective

bĭfŏris

neut. bĭfŏre
(, , Vitr. 4, 6 fin.), bis-foris.
Having two doors; folding-doors
Having two doors or folding-doors: valvae, Ov. M. 2, 4: fenestrae, id. P. 3, 3, 5.—
Having two openings; holes; double poetic
Having two openings or holes, double: via (narium), App. Dogm. Plat. 1.—Poet.: ubi assuetis biforem dat tibia cantum, Verg. A. 9, 618 (bisonum, imparem, Serv.); Aus. Cent. Nupt. 27: biforis tumultus, Stat. Th. 4, 668.