Glans penis
Overview
The glans penis is the sensitive bulbous structure at the distal end of the penis
Penis
The penis is a biological feature of male animals including both vertebrates and invertebrates...

. The glans penis is anatomically homologous to the clitoral glans
Clitoral glans
The clitoral glans is an external portion of the clitoris.- Anatomy :It is covered by the clitoral hood, which is also external and attached to the labia minora...

 of the female. It is sometimes fully or partially covered by the foreskin
Foreskin
In male human anatomy, the foreskin is a generally retractable double-layered fold of skin and mucous membrane that covers the glans penis and protects the urinary meatus when the penis is not erect...

, except in men who have been fully circumcised
Circumcision
Male circumcision is the surgical removal of some or all of the foreskin from the penis. The word "circumcision" comes from Latin and ....

.

The glans is also commonly referred to as the "head of the penis", while common British slang
British slang
British slang is English language slang used in the UK. Slang is informal language sometimes peculiar to a particular social class or group and its use in Britain dates back to before the 16th century...

 terms include "helmet," "knob end" and "bell end", all referring to its distinctive shape.
 
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