Clarisonus | Webster's Dictionary of the English Language

clarisonus
clārĭ-sŏnus, a, um, adj. [clarus], clearsounding , loud , distinct (poet. and rare): vox, Cat. ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
clarisonus
clārisonus adj. clarus + SON-, clear-sounding, loud : vox, Ct.: aurae, C.poet. ...

An Elementary Latin Dictionary