<p><strong>Noun:</strong></p><ul><li>A poem, properly expressive of a single, complete thought, idea, or sentiment, of 14 lines, usually in iambic pentameter, with rhymes arranged according to one of certain definite schemes.</li><li>Being in the strict or Italian form divided into a major group of 8 lines (the octave) followed by a minor group of 6 lines (the sestet).</li><li>In a common English form into 3 quatrains followed by a couplet.</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>Archaic: to compose sonnets.</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>Older Use: to celebrate in a sonnet or sonnets.</li></ul>