The dentist extracted her wisdom tooth.是什么意思？

The dentist extracted her wisdom tooth.

牙医拔掉了她的智牙。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

dentist

n. 牙科医生；

例句
The dentist left his wife of 15 years and openly cohabited with his receptionist...
那个牙医离开了和他生活了15年的妻子，与自己诊所的接待小姐公开同居。

extracted

adj. 萃取的；v. 提取( extract的过去式和过去分词 )，（费力地）拔出，选取，获得；

例句
Citric acid can be extracted from the juice of oranges, lemons, limes or grapefruit.
柠檬酸可以从橙汁、柠檬汁、酸橙汁或者柚子汁中提取。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

wisdom

n. 智慧，明智，常识，好的判断力，知识，学问，古训；

例句
It is accepted wisdom that science has been partly responsible for the decline of religion.
人们普遍认为，科学的兴起是宗教衰落的部分原因。

tooth

n. 牙，齿，齿状部份；vt. 给…装齿；vi. 啮合；

例句
Many infants do not cut their first tooth until they are a year old.
很多婴儿到一岁大时才开始长牙。