n.
1.something clearly established
2.property that your creditor can claim in case you default on your obligation
3.a prisoner who is held by one party to insure that another party will meet specified terms
4.one who provides a warrant or guarantee to another
5.a guarantee that an obligation will be met
Idiom of the Day
come out of the closet
to reveal one's secret interests, to reveal that one is gay
Nobody was surprised when my cousin came out of the closet.