(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.

(US) A shop selling miscellanea.

plural of what-not shop

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.

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

(idiomatic, colloquial) An intensified version of what? or huh?, expressing surprise or lack of comprehension