pen

An enclosure (enclosed area) used to contain domesticated animals, especially sheep or cattle.

“There are two steers in the third pen.”

A prison cell.

“They caught him with a stolen horse, and he wound up in the pen again.”

The bullpen.

“Two righties are up in the pen.”

To enclose in a pen.

A tool, originally made from a feather but now usually a small tubular instrument, containing ink used to write or make marks.

“He took notes with a pen.”

A writer, or his style.

“He has a sharp pen.”

Marks of ink left by a pen.

“He's unhappy because he got pen on his new shirt.”

A light pen.

The internal cartilage skeleton of a squid, shaped like a pen.

A feather, especially one of the flight feathers of a bird, angel etc.

A wing.

To write (an article, a book, etc.).

A female swan.

Penalty.