pen

A fenced enclosure for animals.

The animals kept in such an enclosure.

Any of various enclosures, such as a bullpen or playpen, used for a variety of purposes.

A repair dock for submarines.

To confine in or as if in a pen. synonym: enclose.

A female swan.

A penitentiary; a prison.

An instrument for writing or drawing with ink or similar fluid, especially.

A ballpoint pen.