biforus
Could not find bifora in Logeion dictionaries.
bifora Adjective: feminine nominative singular, Adjective: neuter nominative plural, Adjective: feminine vocative singular, Adjective: neuter vocative plural, Adjective: neuter accusative plural, Adjective: feminine ablative singular of biforus
bĭfŏrus, a, um, v. biforis.
biforus, a, um (bis u. foris), zweiflügelig, ostia, Vitr. 4, 6. § 6.
bĭfŏrus, a, um, c. biforis : Vitr. Arch. 4, 6, 6.