Is this your crossword clue?
"cue" is also used as a crossword clue. If that's what you saw, the answer is often prompt (6 letters).
Definitions
assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned
Word origin
From Middle English cu (used for half a farthing, from q as an abbreviation for Latin quadrāns (“quarter of an as”)), from Latin cū, kū. Compare French ku.
Used in a sentence
“"My name is Quinn," said Quinn. "Cue-you-eye-en-en."”
“When my cue comes, call me, and I will answer.”
“Give them [the servants] their cue to attend in two lines as he leaves the house.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer7 curated clues
01“Signal to act”3 letters
02“Pool stick or signal”3 letters
03“Prompt to speak”3 letters
04“Signal to begin”3 letters
05“Stage signal”3 letters
06“Billiards stick”3 letters
07“Prompt”3 letters
Not quite right?
"Search similar patterns."
C__