noun / verb
cue
KYOO/kjuː/
A signal prompting someone to act or respond.
The prompter's raised hand gives the actor a cue to begin speaking.

Etymology
Origin uncertain. Cue first named the end of an actor's speech that prompted a reply; proposed explanations of the spelling remain disputed.
In context
when we ask him for the behaviour we'll do a hand signal but he'll also get a verbal cue
More examples
- The conductor cues the trumpets with a nod.
- Her yawn was my cue to leave.
- We take our cues from the team leader.
Forms
cue · cues · cued · cueing · cuing