Definition of riff noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//rɪf//
    ; NAmE NAmE//rɪf//
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  1. 1a short repeated pattern of notes in popular music or jazz a guitar riff
  2. 2riff (on something) a monologue (1) (= long speech by one person) on a particular subject, especially a funny one that you make up as you are speaking He launched into an extended riff on the pitfalls of contemporary romance.
  3. Word Origin1930s: abbreviation of the noun riffle.

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