
1) BDSM equipment 2) Physical restraint
Found on
https://www.crosswordclues.com/clue/chastity-belt

A chastity belt is a locking item of clothing designed to prevent sexual intercourse or masturbation. Such belts were historically designed for women, ostensibly for the purpose of chastity, to protect women from rape or to dissuade women and their potential sexual partners from sexual temptation. Modern versions of the chastity belt are predomina...
Found on
http://en.wikipedia.org/wiki/Chastity_belt
[BDSM] Chastity belts in BDSM may be used as part of a practice of orgasm control, to prevent the wearer from engaging in sexual intercourse or masturbation without the permission of the dominant, who acts as `keyholder`. Chastity belts may be worn by both men and women as part of BDSM play. A chastity device may be worn for the duration of...
Found on
http://en.wikipedia.org/wiki/Chastity_belt_(BDSM)

a beltlike device, worn by women esp. in the Middle Ages, designed to prevent sexual intercourse.
Found on
https://www.infoplease.com/dictionary/chastity-belt
No exact match found.