Meaning of “cue” - Learner’s Dictionary

cue

noun uk us /kjuː/
ACTION/EVENT [ C ]

an action or event that is a sign that something should happen:

The final goal was the cue for celebration.
SIGNAL [ C ]

a signal that tells someone to start speaking or doing something when acting in a play, film, etc

on cue

If something happens on cue, it happens at exactly the right time:

Then, right on cue, Andrew appeared at the door.
take your cue from sb/sth

to copy what someone else does:

I took my cue from the others and left.
STICK [ C ]

a long, straight stick used to hit the balls in games like snooker (= a game played with small coloured balls on a table)

(Definition of “cue” from the Cambridge Learner’s Dictionary © Cambridge University Press)