From clairon + -er. claironner to bugle (play the bugle) to holler, yell 1916, “Verdun, on ne passe pas!”, performed by Eugène Joullot and Jack Cazoll:...
bugler (someone who plays the bugle) (music) clairon (saxophone register) claironner claironnement “clairon”, in Trésor de la langue française informatisé...