Cách sử dụng
When we say "the armpit of something," we are referring to the worst or most unpleasant part or location of that thing. For example, if someone says "This town is the armpit of California," they mean that it is the least desirable or most unpleasant place in the state. This expression is not usually used in polite conversation, and it can be considered impolite or offensive in some situations.