bĭ-frons, ontis, adj. [bis],
with two foreheads , or, in a more extended sense, with two faces , an epithet of Janus, Verg. A. 7, 180; 12, 198; Gav. Bass. ap. Macr. S. 1, 9, 13.
bi-frōns ontis, adj.,with two foreheads, with two faces: Ianus, V. ...
An Elementary Latin Dictionary