armpit
/ˈɑːmpɪt/noun
1- a hollow under the arm at the shoulder腋, 腋窝, 胳肢窝。亦称AXILLA.
1.1
- informal, chiefly N. Amer. a place regarded as extremely unpleasant〈非正式, 主北美〉令人厌恶的地方; 乱七八糟的地方：
they call the region the armpit of America.
他们把那个地区称为美国的龌龊旮旯。
短语
up to one's armpits
- chiefly US deeply involved in a particular unpleasant situation or enterprise〈主北美〉深陷麻烦（或事业困境）的：
the country is up to its armpits in drug trafficking.
这个国家陷入了贩毒的泥潭。