CRAB n.
A claw for anchoring a portable machine. Calling crab. (Zoöl.) See Fiddler., n., 2. -- Crab apple, a small, sour apple, of several kinds; also, the tree which bears it; as, the European crab apple (Pyrus Malus var.sylvestris); the Siberian crab apple (Pyrus baccata); and the American (Pyrus coronaria). -- Crab grass.…