<p><strong>Noun</strong></p><ul><li>any of numerous wild or domesticated web-footed swimming birds of the family Anatidae, especially of the genus Anas and allied genera, characterized by a broad, flat bill, short legs, and depressed body.</li><li>the female of this bird, as distinguished from the male.</li><li>the flesh of this bird, eaten as food.</li><li>person; individual: He's the queer old duck with the shaved head and walrus mustache.</li><li>a playing marble, especially one that is not used as a shooter.</li><li>ducks (used with a singular verb) British Slang.</li><li>Cricket Slang: failure of a batsman to score; to be out for a duck.</li><li>a player's score of zero: Compare goose egg.</li></ul><p><strong>Verb</strong></p><ul><li>to be bowled for a duck.</li></ul><p><strong>Adjective</strong></p><ul><li>amounting to zero: a zero score.</li><li>having no measurable quantity or magnitude; not any: zero economic growth.</li></ul>