cob [cðb] - n. 1. A corncob: corn on the cob. 2. A male swan. 3. A thickset, stocky, short-legged horse. 4. A small lump or mass, as of coal. 5. A mixture of clay and straw used as a building material. Probably from obsolete cob, round object, head, testicle. The American HeritageŽ Dictionary of the English Language, Fourth Edition