(idiomatic) To solve two problems with one single action.

(archaic, idiomatic, rare) An incapable (sick, etc) or incompetent soldier.

Alternative form of burn the candle at both ends

(idiomatic) To express one's opinion strongly; to voice one's disagreement or dissatisfaction, especially with another person; to scold or rebuke someone.

(transitive, simile) To be intimately knowledgeable about something.

(idiomatic, mostly British) To lose one's temper; to throw a tantrum.

(UK, idiomatic, humorous) Expresses disbelief.

One act of kindness should be paid back by another act of kindness.

(idiomatic) To seek to have two things which are mutually incompatible (such as eating a piece of cake and yet still possessing that piece for future use).

(idiomatic) To deal with a problem or situation only if and when it arises.