third sex . third sex {n.}, {euphemism}, {slang}, {informal} Homosexual individuals who are either men or women. Billy is rumored to belong to the third sex. Categories: add yours {euphemism} {informal} {n.} {slang} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: T Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Post my comment