(1):
(n.) The hard, white, opaque, fine-grained substance constituting the tusks of the elephant. It is a variety of dentine, characterized by the minuteness and close arrangement of the tubes, as also by their double flexure. It is used in manufacturing articles of ornament or utility.
(2):
(n.) Any carving executed in ivory.
(3):
(n.) Teeth; as, to show one's ivories.
(4):
(n.) The tusks themselves of the elephant, etc.