The outermost of the three small auditory bones, ossicles; the hammer. It is attached to the tympanic membrane by a long process, the handle or manubrium. See Illust. of Far. [1913 Webster]
One of the hard lateral pieces of the mastax of Rotifera. See Mastax. [1913 Webster]
A genus of bivalve shells; the hammer shell. [1913 Webster]