What is "grimacer"

Usage examples of "grimacer".

A pile of Cassandras, Harlequins and Columbines, jolted along high above the passersby, all possible grotesquenesses, from the Turk to the savage, Hercules supporting Marquises, fishwives who would have made Rabelais stop up his ears just as the Maenads made Aristophanes drop his eyes, tow wigs, pink tights, dandified hats, spectacles of a grimacer, three-cornered hats of Janot tormented with a butterfly, shouts directed at pedestrians, fists on hips, bold attitudes, bare shoulders, immodesty unchained.

I will do myself the justice to say, that I have never had any better opinion of the philosophies of all those philosophers, than of the spectacles of the grimacer of Tivoli!