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noun coat·tail \ˈkōt-ˌtāl\

Simple Definition of coattail

  • : a long piece of cloth that hangs down at the back of a man's formal coat

  • coattails : the help or influence of another person's work, ideas, or popularity

Source: Merriam-Webster's Learner's Dictionary

Full Definition of coattail

  1. 1 :  the rear flap of a man's coat

  2. 2 plural :  the skirts of a dress coat, cutaway, or frock coat

  3. 3 plural :  the influence or pulling power of a popular movement or person (as a political candidate) <congressmen riding into office on the president's coattails>

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