A2 [C or U] a period of time in which you relax, do not do anything active, or sleep: After they had carried the piano up the stairs, they stopped for a rest. The doctor prescribed some pills and told her to get/have a week's rest.Periods of time - general words › [C] specialized a period of silence between musical notes, or a symbol that represents this: a minim restBeats or lengths of musical notes at rest › describes someone or something that is not doing anything active, or not moving: Her heartbeat is only 55 at rest.Passive and not workingImmobility › used as a polite way to say that someone is dead: Your father was a very troubled man, but he's at rest now.Death and dying come to rest › to stop, usually in a particular place: The car hit the kerb, rolled over and came to rest in a ditch.Staying and remainingWaitingImmobility