<p><strong>Interjection</strong></p><ul><li>Used to express impatience, contempt, disbelief, etc.</li></ul><p><strong>Noun</strong></p><ul><li>An exclamation of “pshaw!”</li><li>A term for a person who says “pshaw.”</li></ul><p><strong>Verb</strong></p><ul><li>(Used without object) To say “pshaw.”</li><li>(Used with object) To say “pshaw” at or to.</li></ul>