Definition of "penis" in English

noun

1. (anatomy) The male erectile reproductive organ used for sexual intercourse that in the human male and other placental mammals is also used for urination; the tubular portion of the external male genitalia (excluding the scrotum).

   • The female clitoris is homologous to the male penis.
   • See, the problem is that God gives men a brain and a penis, and only enough blood to run one at a time.
   • 1998, Collecting Mark Twain: A History and Three New Paths, Kevin Mac Donnell, Firsts Magazine, Inc. By early November, the sheets of HUCK FINN were being forwarded for binding, and within a week or two it was discovered that the illustration at page 283 had been altered in the master plate to make it appear as if Uncle Silas was exposing his penis. Twain would be amused to know that this may be the first time the word "penis" has ever been used to describe the alteration to this plate; the euphemisms and delicate phrasings employed by previous bibliographers to avoid stating the obvious are impressive.

2. (zoology) A similar erectile sexual organ present in the cloacas of male amniotes.