(colloquial) What is that? / (colloquial) 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.

(transitive, idiomatic) To scold; to punish, especially verbally.

Alternative form of know what is what

(idiomatic) To be experienced or well-informed. / (idiomatic) To be astute, perceptive enough to observe a situation that is not what it seems and recognize its true nature.

(idiomatic) To admonish or berate; to speak angrily at somebody.

(idiomatic, slang) To punish; to rebuke.

What is the time of day? (used to request for the current hour and approximate number of minutes after the hour)