(noun)
a stimulus that provides information about what to do
(verb)
assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned
(noun)
evidence that helps to solve a problem
(noun)
sports implement consisting of a tapering rod used to strike a cue ball in pool or billiards
(noun)
an actor's line that immediately precedes and serves as a reminder for some action or speech