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English definition of “pen”

pen

noun [C] uk   /pen/ us  

pen noun [C] (FOR WRITING)

A1 a long, thin object used for writing or drawing with ink: a fountain/ballpoint/felt-tip pen Don't write in pen (= using a pen), or you won't be able to rub out any mistakes you make.

pen noun [C] (ENCLOSED SPACE)

a small area surrounded by a fence, especially one in which animals are kept: a sheep/pig pen
See also
US slang for penitentiary: He served nine years in the state pen.

pen

verb [T] uk   /pen/ (-nn-) formal us  
to write something: She penned a note of thanks to her hostess.
Phrasal verbs
(Definition of pen from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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