Asks the interlocutor to identify an indicated object.

(colloquial) What did you just say? / Used other than figuratively or idiomatically: see what, was, that.

Used to ask the listener what they want.

What about; used to ask someone to consider something or someone that they have apparently not considered.

(rare) Because of, due to.

(idiomatic) what are the advantages of (something) to me, personally?

(colloquial, in rhetorical questions or salutations) What's wrong with; what's the problem or matter with. Said to express that the behaviour of someone, or operation of something, is out of the ordinary or problematic.

(idiomatic, colloquial, with up in the sense of "of concern") What’s the matter? What is the problem? What is wrong?

(idiomatic) What is wrong? What's the problem? / (dated) What's happening? What's the news?

(idiomatic) What is the purpose or advantage of