yin-yang /ˈjɪn ˈjæŋ/ noun4 •Yin and yang. •A circular symbol with white and black sections (☯), representing the fusion of the concepts of yin and yang. •(informal, vulgar) The anus or rectum.He thought he could smuggle the drugs over the border by putting them in capsules and stuffing them up his yin-yang. Not a good idea! •(informal, vulgar) The vulva or vagina.U.S.S. Millicent asked Mario if he'd ever seen a girl's yin-yang before. — 1996 formsyin-yangs
