n. A quadruped of the genus Felis, F. leo, the largest of all carnivorous animals, distinguished by its tawny or yellow color, a full flowing mane in the male, a tufted tail, and the disappearance of the feline markings in both sexes before they arrive at maturity.n. Figuratively, a lion-like person; a man possessing the courage, fierceness, etc., of a lion.n. [capitalized] In astronomy, a constellation and sign of the zodiac. See Leo, 1.n. In heraldry, a representation of a lion used as a bearing.n. A gold coin current in Scotland from the time of Robert III. to the reign of James VI.: so called from the lion on the obverse of the coin.n. A copper coin: same as hardhead, 2.n. An object of interest and curiosity; especially, a celebrated or conspicuous person who is much sought by society or by the public in general: as, to visit the lions of the place; such a one is the lion of the day.n. An imaginary danger, trumped up by cowardice or sloth.n. Any humble friend or follower who acts as a sycophant or foil to another.n. A silver and a gold coin of the Belgian provinces, struck in 1790. The value of the gold lion was about $6.50.