Janus (n.)
[pron: 'jaynus] Roman god who guards gates and doors; shown with two faces, one at the back of his head
MV I.i.50[Solanio to Antonio] by two-headed Janus
Oth I.ii.33[Iago to Othello] By Janus
SHAKESPEARE'S WORDS © 2020 DAVID CRYSTAL & BEN CRYSTAL