Meaning of bestseller

best•sell•er

Pronunciation: (best'sel'ur), [key]
— n.
  1. a book that is among those having the largest sales during a given period.
  2. any product that among those of its kind is selling particularly well at a given time: This car was a bestseller last year.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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