Definition of penis in US English:

penis

noun

  • 1The male genital organ of higher vertebrates, carrying the duct for the transfer of sperm during copulation. In humans and most other mammals, it consists largely of erectile tissue and serves also for the elimination of urine.

    phallus, member, male member, organ, male organ, sex, erection
    View synonyms
    1. 1.1Zoology A type of male copulatory organ present in some invertebrates, such as gastropod mollusks.

Origin

Late 17th century: from Latin, ‘tail, penis’.

Pronunciation

penis

/ˈpinɪs//ˈpēnis/