Mento, ōnis, m. amplif. [mentum],
a Roman proper name . So C. Julius Mento, consul A. U. C. 323, Liv. 4, 26.
mento, ōnis, m. amplif. [mentum], one who has a long chin, long-chin , Arn. 3, 108. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.