n. [ Prob. a dim. of hump. See Hump. ] 1. A rounded knoll or hillock; a rise of ground of no great extent, above a level surface. [ 1913 Webster ]

2. A ridge or pile of ice on an ice field. [ 1913 Webster ]

3. Timbered land. See Hammock. [ Southern U.S. ] [ 1913 Webster ]

n. The process of forming hummocks in the collision of Arctic ice. Kane. [ 1913 Webster ]

a. Abounding in hummocks. [ 1913 Webster ]