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English definition of “pen”

pen

noun  /pen/ us  

pen noun (WRITING DEVICE)

[C/U] a thin device with a point used for writing or drawing with ink: [C] a fountain/ballpoint/felt-tip pen [U] You must fill out the application in pen (= using a pen).

pen noun (ENCLOSED SPACE)

[C] a small area surrounded by a fence in which animals are kept, or slang a prison or jail

pen

verb [T]  /pen/ (-nn-) us  

pen verb [T] (WRITING DEVICE)

to use a pen to write or draw something with ink: She penned (= wrote) a thank-you note.

pen verb [T] (ENCLOSED SPACE)

to enclose a person or animal in a small area by surrounding the area with a fence: Sheep are penned behind the barn.
(Definition of pen from the Cambridge Academic Content Dictionary © Cambridge University Press)
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