Definitions of forfeit from
http://www.dictionary.com:
1. a fine; penalty.
2. an act of forfeiting; forfeiture.
3. something to which the right is lost, as for commission of a crime or misdeed, neglect of duty, or violation of a contract.
4. an article deposited in a game because of a mistake and redeemable by a fine or penalty.
5. forfeits, (used with a singular verb) a game in which such articles are taken from the players. – verb (used with object)
6. to subject to seizure as a forfeit.
7. to lose or become liable to lose, as in consequence of crime, fault, or breach of engagement. – adjective
8. lost or subject to loss by forfeiture.