pen 1 S2 / pen / 名词

1 [可数和不可数名词] an instrument for writing or drawing with ink → pencil , biro :

a ballpoint pen

a felt-tip pen

in pen

Please fill out the form in pen.

a pen and ink drawing

2 [可数名词] a small piece of land enclosed by a fence to keep farm animals in :

a sheep pen → playpen

3 put/set pen to paper to begin to write

4 [可数名词] American English informal a short form of penitentiary

5 [可数名词] British English informal a penalty , used especially when talking about football