From WordNet (r) 3.0 (2006):
cue
n 1: an actor's line that immediately precedes and serves as a
reminder for some action or speech
2: evidence that helps to solve a problem [syn: clue, clew,
cue]
3: a stimulus that provides information about what to do [syn:
discriminative stimulus, cue]
4: sports implement consisting of a tapering rod used to strike
a cue ball in pool or billiards [syn: cue, cue stick,
pool cue, pool stick]
v 1: assist (somebody acting or reciting) by suggesting the next
words of something forgotten or imperfectly learned [syn:
prompt, remind, cue]