CUE

(SIGNAL) [noun] [C] - a word or action said by a performer in a play or film, which is used as a signal by another performer to begin saying or doing somethingIn my first stage appearance, I almost missed my cue.When he turns around, it's her cue to come out of the wardrobe. [+ to infinitive]A cue is also a signal for someone to do something.They started washing up, so that was our cue to leave the party. [+ to infinitive]If something happens on cue, it happens just after someone has said or thought it would happen.I was just wondering where Sarah was, when right on cue she came in.If you take your cue from someone, you take notice of their words or behaviour so that you know what you should do.She watched his lips carefully and took her cue from him.If you take your cue from something, you are greatly influenced by it.The architects took their cue for the design of the new pub from the nearby Jacobean house, Aston Hall.