From The Collaborative International Dictionary of English v.0.48:
Cent \Cent\, n. [F. cent hundred, L. centum. See Hundred.] 1. A hundred; as, ten per cent, the proportion of ten parts in a hundred. [1913 Webster]
2. A United States coin, the hundredth part of a dollar, formerly made of copper, now of copper, tin, and zinc. [1913 Webster]
3. An old game at cards, supposed to be like piquet; -- so called because 100 points won the game. --Nares. [1913 Webster]