Poenīnus (Pennī-) adj.
Penninus, from Celtic pen (peak), became Poeninus, as if from Poenus, after Hannibal's passage, Pennine (of the Alps, from the Great St. Bernhard to the St. Gotthard), L.
Poenīnus, a, um, v. Penninus. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.