<p><strong>Verb</strong></p><ul><li>(used without object) To growl threateningly or viciously, especially with a raised upper lip to bare the teeth, as a dog.</li><li>To speak in a surly or threatening manner suggestive of a dog's snarl.</li><li>To say by snarling: to snarl a threat.</li></ul><p><strong>Noun</strong></p><ul><li>The act of snarling.</li><li>A snarling sound or utterance.</li></ul>