Definition of "suck in" [suck in]

• To cause someone to become slowly more and more involved in a business or situation that is often not to that person's liking. (verb)
• To contract one's abdominal muscles to make one's stomach look flatter. (verb)

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• "The effect was quite dramatic; he could hear several of the watching Dwomorites suck in their breath."
• "But when Thumbless Wu formed a secret society to oppose the hidden places where those who once gambled went to suck in white smoke, the men who bought the chests that came from Calcutta made every man of the Middle Kingdom who traded with them for the precious black balls swear that Wu Thumbless would have none of what they bought."
• "When they reached the narrow bar, Sharon dismounted and let the horse bury its muzzle in the cool, clear water and suck in the liquid in noisy slurps."