Webster's Dictionary 
(1): (n.) Anything having the shape of a crescent or new moon.
(2): (n.) A symbol of Artemis, or Diana.
(3): (n.) The increasing moon; the moon in her first quarter, or when defined by a concave and a convex edge; also, applied improperly to the old or decreasing moon in a like state.
(4): (n.) A representation of the increasing moon, often used as an emblem or badge
(5): (n.) The emblem of the Turkish Empire, adopted after the taking of Constantinople.
(6): (n.) Any one of three orders of knighthood; the first instituted by Charles I., king of Naples and Sicily, in 1268; the second by Rene of Anjou, in 1448; and the third by the Sultan Selim III., in 1801, to be conferred upon foreigners to whom Turkey might be indebted for valuable services.
(7): (n.) The emblem of the increasing moon with horns directed upward, when used in a coat of arms; - often used as a mark of cadency to distinguish a second son and his descendants.
(8): (n.) The ancient symbol of Byzantium or Constantinople.
(9): (a.) Increasing; growing.
(10): (v. t.) To form into a crescent, or something resembling a crescent.
(11): (v. t.) To adorn with crescents.
(12): (a.) Shaped like a crescent.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature 
the emblem of the Ottoman empire. (See Constantinople) (1, 1).