1) the erroneous spelling of yin yang or [yin-yang], which is an ancient concept and symbol referring to complementary opposites, such as light/dark, day/night, masculine/feminine, sun/moon. Yin is seen as dark, passive and feminine. Yang is seen as light, active, and masculine.
2) slang term for the anus
> 1) Crystal wore a ying-yang symbol as a pendant hanging from a chain around her neck, signifying that she lived in complete harmony with the world around her.
> 2) Blow it out your ying yang, dickhead!