<p><strong>Noun</strong></p><ul><li>the small, greenish-yellow, acid fruit of a citrus tree, <em>Citrus aurantifolia</em>, allied to the lemon.</li><li>the tree that bears this fruit.</li><li>greenish yellow.</li></ul><p><strong>Adjective</strong></p><ul><li>of the color lime.</li><li>of or made with limes.</li></ul>