n. A stupid fellow; a clown: with various shades of intensity as an opprobrious epithet, like fool, dolt, etc.n. A four-toed diving bird of the genus Colymbus or Urinator. See Colymbidæ.n. A name used locally for several very different birds: in England, for some of the grebes, including the large Podiceps cristatus and the little dabchick, P. minor; by sailors often in the form loom, for the murre, Lomvia arra.