It is conventional to view the possession of a penis as what defines one as male, and so as the key marker of sexual difference. Many commentators argue that a sexually functioning penis is central to a man’s sense of masculinity. Though rarely...

Male external genitalia, used for COPULATION and for the passage of urine; see also...

The penis (plural penises, penes) is an external sexual organ of certain biologically male organisms. The penis is a reproductive organ, technically an intromittent organ, and for mammals, additionally serves as the external organ of...