名詞 pen:

1. a writing implement with a point from which ink flows
2. an enclosure for confining livestock
3. a portable enclosure in which babies may be left to play
   同義詞：playpen
4. a correctional institution for those convicted of major crimes
   同義詞：penitentiary
5. female swan

動詞 pen:

1. produce a literary work
   同義詞：write, compose, indite

1. The pen slips out of my fingers.
   鋼筆從我指縫中滑下去了。
2. The duke wrote a letter with a quill pen.
   公爵用一根羽毛筆寫信。
3. Put down my pen and stop fiddling!
   把我的鋼筆放下，別用手玩弄！
4. He dipped his pen in the ink.
   他拿鋼筆蘸墨水。
5. She fumbled about in her handbag for a pen.
   她在手提袋中搜尋鋼筆。
6. She penned a few words of thanks.
   她寫了幾句致謝的話。
7. He lives by his pen.
   他以寫作為生。
8. May I borrow your pen?
   我可以借用你的鋼筆嗎？

pen

n.（名詞）
An instrument for writing or drawing with ink or similar fluid, especially:
筆：一種用墨水或類似液體進(jìn)行書寫或繪畫的工具，尤其是：
A ballpoint pen.
圓珠筆
A fountain pen.
自來水筆
A pen point.
筆尖
A penholder and its pen point.
筆桿及筆尖
A quill.
鵝毛筆
An instrument for writing regarded as a means of expression:
筆桿子：用作表達(dá)方式的寫作工具：
例句：
.Tyranny has no enemy so formidable as the pen.(William Cobbett)
.文字和思想是暴政最強(qiáng)勁的敵人.(威廉·科貝特)

A writer or an author:
作家，作者：
例句：
a hired pen.
受雇的文人

A style of writing:
作品風(fēng)格：
例句：
wrote plays with a witty pen.
用機(jī)智的文筆寫劇本

pens Pinions.
pens 翼，翅膀
The chitinous internal shell of a squid.
羽狀殼：烏賊的殼質(zhì)的內(nèi)殼
v.tr.（及物動詞）
penned,pen.ning,pens
To write or compose with or as if with a pen.
寫作：用或好像用筆寫或撰寫

來源：
Middle English penne
中古英語 penne
from Old French
源自 古法語
from Late Latin penna
源自 后期拉丁語 penna
from Latin [feather] * see pet-
源自 拉丁語 [羽毛] *參見 pet-

【引伸】
pen.ner
n.（名詞）

---------------另--------------
pen
pen 2

n.（名詞）

A fenced enclosure for animals.
畜欄：一種圈養(yǎng)牲畜的圍欄地
The animals kept in such an enclosure.
圈中或欄中的禽畜
Any of various enclosures, such as a bullpen or playpen, used for a variety of purposes.
圍欄：用于養(yǎng)?；蛴螒虻鹊挠卸喾N用途的圍欄
A repair dock for submarines.
潛艇停泊檢修時(shí)用的船塢
v.tr.（及物動詞）
penned 或 pent [pμnt] pen.ning,pens
To confine in or as if in a pen.See Synonyms at enclose
禁錮或似被監(jiān)禁于圍欄中參見 enclose

來源：
Middle English
中古英語
from Old English penn
源自 古英語 penn

pen
pen 3

n.（名詞）
A female swan.
雌天鵝

來源：
[Origin unknown]
[詞源不明]

pen
pen 4

n.Informal （名詞）【非正式用語】
A penitentiary; a prison.
重罪監(jiān)獄；監(jiān)獄

來源：
Short for penitentiary
penitentiary的簡寫