Dictionary 1. (n.) A rounded knoll or hillock; a rise of ground of no great extent, above a level surface.2. (n.) A ridge or pile of ice on an ice field. 3. (n.) Timbered land. See Hammock. Thesaurus anthill barrow brae butte down drumlin dune fell foothills hill hillock knob knoll molehill monticle monticule moor mound sand dune swell |