A device used to ensure that the wearer does not have sex, or, in some cases, have any form of sexual stimulation such as masturbation.

In modern times, mostly used as a component of BDSM. The wearer will be put in the belt and surrender the key to another person, who then has (theoretically, effectiveness varies depending on the person and the device) complete control over the wearer's sexual release.
I always make my slave wear a chastity belt; by the end of a week in it, he's so desperate for release he'll do anything!
by Knotilus May 11, 2009
The same as a cock block, just for women. This usually occurs among twins or a group of awkward females. A male that can hit on both parties during a chastity belting gains manliness instantly.
Mari(twin): Hey Ethan
Ethan: 'sup Mari
Sarah (twin): Hey Ethan
Ethan: Oh erm, hey guys.
Mari: Wanna hang out tonight?
Sarah: Yeah, hang out with us!
Ethan: Wait, which one....?
Mari: Sarah, don't Chastity Belt me!
by starfurmachete February 15, 2010
A device worn around the genitals in order to protect against rape, discourage sex, or control masturbation.
I have made my son wear a chastity belt at all times since he was 10. He is 17 now and I have the key hidden to give to his wife when he marries. He is very well behaved and has never been able to masturbate. The belt is designed to allow urination without removal, so it can be left on all the time! I will continue this practice with any future sons.
by Smartmom August 21, 2013
A belt worn to keep you from getting raped, made from lead and metal, looks kind of like a baby swing at parks. Used in the olden days and still used in some jails.
The king advised the queen to wear a chastity belt, for he was to concerned of thieves.
by nimadude October 28, 2003
A chastity belt?!?! Oh, that's gonna chafe my willy
by Anonymous November 7, 2003
When a female quickly clasps her hands together between and/or through her legs to block the cock! Used when a female is uninterested in sexual contact.
David inched his way across the bed toward Tammy. She quickly gave him the chastity belt!
by SLMSEATOWN April 10, 2006