n an actor's line that immediately precedes and serves as a reminder for some action or speech
n evidence that helps to solve a problem
n a stimulus that provides information about what to do
n sports implement consisting of a tapering rod used to strike a cue ball in pool or billiards
v assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned
n. 开端, 线索；球杆；提示, 关键；诱因（cue的复数形式）