(of a missile) fired from the ground at an aircraft in flight, or at an incoming missile

(of a missile) fired from the ground, or from a ship, at an aircraft in flight, or at an incoming missile

(of a missile) fired from an aircraft at a target on the ground

(of a missile) fired from an aircraft at a target on land or water

(idiomatic) To rapidly reach a turning point or climax. / (idiomatic) To suddenly reveal that which has lain latent for a time.

(idiomatic) A problem that is challenging to solve. / (idiomatic, by extension) A situation, person, group, etc. which is difficult to deal with.

(idiomatic) A difficult, arduous task or set of tasks; a lengthy, demanding project.

(idiomatic) That for which one has bragging rights; one's reason for being well-known or famous.

Must; need to; to be required to. Indicates obligation. / (with be) Must (logical conclusion).

(idiomatic) Very fancily or formally dressed; wearing very showy or splendid clothing.