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1. To track or locate someone, something, or an animal by following their or its scent. A noun or pronoun can be used between "scent" and "out." The escaped convicts may have disappeared, but these bloodhounds will scent them out in no time. We use trained pigs to scent out truffles, a practice going back to the ancient Romans.
2. To detect, track down, or locate someone or something, especially based on instinct or intuition. A noun or pronoun can be used between "scent" and "out." A veteran reporter can scent out a juicy story from the most minute of details. He scented it out right away that something was wrong with the situation.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.