n. (c.)可數名詞(尤指飼養動物的)圈;欄Please put the sheep in their pen for the night
v.t.及物動詞把...關起來Please pen your pigs; I do not want them in my garden
n. (c.)可數名詞筆 ; 鋼筆Here is a pen so you can write your name on this paper
v.t.及物動詞寫He wanted to pen a love song to her but he was lacking in ideas for a tune