<p><strong>Noun</strong></p><ul><li>Any of several longwinged, American goatsuckers of the genus Chordeiles, related to the whippoorwill, especially C. minor, having variegated black, white, and buff plumage.</li><li>The European goatsucker or nightjar, Caprimulgus europaeus.</li><li>Informal: A person who is habitually up or moving about late at night; night owl.</li><li>A short-barreled revolver of large caliber.</li><li>Metallurgy: Slag from a puddling furnace.</li><li>An assistant to the proctor at Oxford and Cambridge universities.</li></ul><p><strong>Adjective</strong></p><ul><li>Like or characteristic of a bulldog or of a bulldog's jaws; bulldog obstinacy.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>Bulldogged, bulldogging: To attack in the manner of a bulldog.</li><li>Western U.S.: To throw (a calf, steer, etc.) to the ground by seizing the horns and twisting the head.</li></ul>