(interj.) Pshaw! pish! nonsense! -- an expression of scorn, dislike, or contempt.
Thesaurus Entries
Bronx cheer, bird, boo, catcall, chaps, chops, embouchure, gab, gob, hiss, hoot, jaw, jaws, jowls, kisser, lips, mandibles, maw, maxilla, mouth, mug, mush, muzzle, oral cavity, pooh, pooh-pooh, premaxilla, razz, row, trap, yap
