<p><strong>Noun:</strong></p><ul><li>an iron hook with a handle for landing large fish</li><li>the spur on a climbing iron, especially as used by telephone linemen</li><li>nautical: a spar rising aft from a mast to support the head of a quadrilateral fore-and-aft sail, gaff sail, or gaff-headed sail</li><li>a metal spur for a gamecock</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>to hook or land (a fish) with a gaff</li></ul>