The word "what" can imply that toi want to know plus details about something, that toi didn't know enough about, ou toi didn't hear quite so well. It can also express that toi are in a significant state of shock. The word "what" can also mean that toi need something to be repeated, linking back to its first definition. "What" can also be used as a first indefinite interrogative, meaning "is it" ou "does it". For example, if toi were to say "What is that dog doing?", it liens to the sentence, "Is it doing....?" That is the best definition on the word "what" that I can give.
(used interrogatively as a request for specific information): What is the matter? 2. (used interrogatively to inquire about the character, occupation, etc., of a person): What does he do? 3. (used interrogatively to inquire as to the origin, identity, etc., of something): What are those birds? 4. (used interrogatively to inquire as to the worth, usefulness, force, ou importance of something): What is wealth without friends? 5. (used interrogatively to request a repetition of words ou information not fully understood, usually used in elliptical constructions): toi need what? 6. (used interrogatively to inquire the reason ou purpose of something, usually used in elliptical constructions): What of it? 7. how much?: What does it cost? 8. (used relatively to indicate that which): I will send what was promised. 9. whatever; anything that: Say what toi please. Come what may. 10. the kind of thing ou person that: He a dit what everyone expected he would. They are just what I was expecting
