mistress

名词 mistress:

1. an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man
   同义词：kept woman, fancy woman
2. a woman schoolteacher (especially one regarded as strict)
   同义词：schoolmarm, schoolma'am, schoolmistress
3. a woman master who directs the work of others

1. If there were no husband, who will look after our mistress?
   要是人间没了丈夫，试问谁会照顾我们这些主妇？
2. The poet addressed many poems to his mistress, praising her beauty.
   这位诗人为他心爱的女子写了许多诗，歌颂她的美丽。
3. The dog ran alongside his mistress.
   狗在女主人的身边奔跑。

mis.tress

n.（名词）
A woman in a position of authority, control, or ownership, as the head of a household:
主妇：做家庭主妇，处于权威者、控制者或所有者地位的妇女：
例句：
.Thirteen years had seen her mistress of Kellynch Hall.(Jane Austen)
.十三年来看她一直作着凯林克府第的女主人.(简·奥斯汀)

A woman owner of an animal or a slave.
女主人：一个动物或一个奴隶的女性拥有者
A woman with ultimate control over something:
女主人：对某事有最终控制的女人：
例句：
the mistress of her own mind.
她自己心灵的主人

A nation or country that has supremacy over others:
霸主：对其它国有控制权的一个民族或国家：
例句：
Great Britain, once the mistress of the seas.
英国，曾一度是海上霸主

Something personified as female that directs or reigns:
女统治者：被拟人化成能指挥或统治的女性的某事物：
例句：
.my mistress . . . the open road.(Robert Louis Stevenson)
.开阔的大路…我的主人.(罗伯特·路易斯·史蒂文森)

A woman who has mastered a skill or a branch of learning:
女能手：掌握一技之长或一门学问的女性：
例句：
a mistress of the culinary art.
烹调高手

A woman who has a continuing sexual relationship with a usually married man who is not her husband and from whom she generally receives material support.
情妇：与通常是已婚但又不是自己丈夫的男子保持长久的性关系，并从他那里得到物质支持的女人
Mistress Used formerly as a courtesy title when speaking to or of a woman.
Mistress 女士，夫人：与女性交谈或谈及一位女性时，用作礼貌称谓
Chiefly British A woman schoolteacher.
【多用于英国】 女教师

来源：
Middle English maistresse
中古英语 maistresse
from Old French [feminine of] maistre [master]
源自 古法语 [] maistre的阴性词 [男主人]
from Latin magister * see master
源自 拉丁语 magister *参见 master