The act of giving a signal or hint to someone, or in billiards/pool, the action of striking a ball with a cue stick.
From the noun 'cue,' which derives from the letter Q (the shape of a billiards stick), originally from French queue meaning 'tail.' The -ing ending makes it a present participle.
The word 'cue' actually comes from the letter Q—pool players literally named their stick after what it looked like written down, showing how games shaped language!
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