Real Dictionary

swallow
verb: If you swallow something, you cause it to go from your mouth down into your stomach.

swallow in American English 1
to pass (food, drink, etc.) from the mouth through the gullet or esophagus into the stomach, usually by a series of muscular actions in the throat
intransitive verb: to perform the act of swallowing
noun: the act or an instance of swallowing
transitive verb: to take into the stomach by drawing through the throat and esophagus with a voluntary muscular action, as food, drink, or other substances

swallow in American English 2
any of a family (Hirundinidae) of small, swift-flying, insect-eating passerine birds with long, pointed wings and a forked tail, including the barn swallow and purple martin: most species migrate, often between widely separated summer and winter homes
noun: any of numerous small, long-winged passerine birds of the family Hirundinidae, noted for their swift, graceful flight and for the extent and regularity of their migrations

swallow in British English 1
to pass (food, drink, etc) through the mouth to the stomach by means of the muscular action of the oesophagus

swallow in British English 2
noun: any passerine songbird of the family Hirundinidae, esp Hirundo rustica (common or barn swallow), having long pointed wings, a forked tail, short legs, and a rapid flight