<p><strong>Noun</strong></p><ul><li>the front or under part of a vertebrate body from the breastbone to the pelvis, containing the abdominal viscera; the abdomen.</li><li>the stomach with its adjuncts.</li><li>appetite or capacity for food; gluttony.</li><li>the womb.</li><li>the inside or interior of anything: the belly of a ship.</li><li>a protuberant or bulging surface of anything: the belly of a flask.</li><li>the fleshy part of a muscle.</li><li>the front, inner, or under surface or part, as distinguished from the back.</li><li>the front surface of a violin or similar instrument.</li><li>a bulge on a vertical surface of fresh concrete.</li><li>the underpart of the fuselage of an airplane.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to fill out; swell: Wind bellied the sails.</li><li>(used without object) to swell out: Sails bellying in the wind.</li><li>to crawl on one's belly: soldiers bellying through a rice paddy.</li></ul><p><strong>Verb Phrase Informal</strong></p><ul><li>to approach closely, especially until one is in physical contact: to belly up to a bar.</li><li>to curry favor from: Would you have gotten the promotion if you hadn't bellied up to the boss?</li></ul>