penis

American  

[pee-nis] / ˈpi nɪs /

noun

Anatomy, Zoology.

plural

penises, penes

1. the primary organ used for insemination and, in male mammals, urination.

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penis British  

/ ˈpiːnɪs /

noun

1. the male organ of copulation in higher vertebrates, also used for urine excretion in many mammals

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penis Scientific  

/ pē′nĭs /

plural

penises

1. The male reproductive organ of mammals and some reptiles and birds. In mammals, the penis contains the urethra, which carries urine from the bladder and releases sperm during reproduction.

2. A similar organ found in the males of some invertebrate animals.

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penis Cultural  

1. The organ of the male reproductive system through which semen passes out of the body during sexual intercourse. The penis is also an organ of urination.

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Other Word Forms

• penial adjective
• penile adjective

Etymology

Origin of penis

First recorded in 1685–95, from Latin pēnis “tail, penis”; akin to Greek péos, Sanskrit pásas

Example Sentences

The Gardasil 9 HPV vaccine protects against types of HPV that can cause cancers of the mouth, throat, vulva, vagina, penis and anus.

From Salon • Feb. 22, 2026

She leads nutrition education at the Feed Real Institute, an online certificate program founded in 2015 by Balaram, who also runs a company that sells air-dried dog treats like bull penis and rabbit feet.

From The Wall Street Journal • Jan. 28, 2026

He was accused of causing the disappearance of the boy’s penis through witchcraft, an accusation that shocked him and is untrue.

From BBC • Oct. 25, 2024

The conditions include the removal of breasts for transgender men, the removal of the penis and testes for transgender women, and having undergone continuous hormonal treatment for at least two years before applying.

From Seattle Times • Apr. 29, 2024

I had a penis, and therefore I had to figure out what being male meant.

From "Bad Boy" by Walter Dean Myers

Related Words

• member
• weenie