(finance) The institution in a financial system that acts as the provider of liquidity to a financial institution that finds itself unable to obtain sufficient liquidity in the interbank lending market and has exhausted other possible sources.

(medicine) A pharmaceutical drug that is tried after all other drug options have failed to produce an adequate response in the patient.

die / (uncommon) be defeated

plural of letter of last resort

A handwritten letter from the British Prime Minister to the commanding officers of nuclear submarines, specifying the action to be taken in the event that an enemy nuclear strike destroys the British government.

From beginning to end.

(intransitive) To visit the place where the remains of a dead person has been prepared for burial or cremation, either as a private act of remembrance or as a public display to others.

(informal) Said ironically to scold somebody who is staring at the speaker.

(idiomatic) To die.

(idiomatic) until the last moment.