<p><strong>Noun</strong></p><ul><li>a cultivated plant, <em>Allium ampeloprasum</em>, of the amaryllis family, related to the onion, with a long cylindrical bundle of straplike leaves that are used in cooking, especially the paler portion near the base</li><li>any of various onion-related plants, especially the wild leek, <em>Allium ampeloprasum</em>, from which the culinary leek was cultivated</li></ul>