cue

A cue is a signal or prompt that helps someone remember something or do something. It's like a reminder.

When we talk about a cue, we often mean a word or phrase that reminds us of something. For example, if you're trying to remember a name, your friend might give you a cue and say "You know who I'm thinking of?" Then you can think back and try to remember the person's name based on what they told you. Cues are also used in acting and performance - an actor might get a cue from another actor or from music to start speaking their lines. It's like a secret word that says "go ahead" or "start now".