Liberal Dictionary English Dictionary
noun
- an elasticized belt, a men’s undergarment, with a pouch for supporting and protecting the genitals, worn especially while participating in athletics.
noun
- an elasticated belt with a pouch worn by men, esp athletes, to support the genitalsAlso called: athletic support
also jock-strap, “supporter of the male genital organs, used in sports,” 1897, with strap (n.) + jock slang for “penis” c.1650-c.1850, probably from Jock, the nickname for John, which was used generically for “common man” from c.1500.