(1):
(n.) A small bone in the foot of a horse.
(2):
(n.) Informal shortening of coronary thrombosis, also used generally to mean heart attack.
(3):
(a.) Of or pertaining to a crown; forming, or adapted to form, a crown or garland.
(4):
(a.) Resembling, or situated like, a crown or circlet; as, the coronary arteries and veins of the heart.