[best-sel-er] 
| 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. |
| best·sell·er also best seller (běst'sěl'ər) n. A product, such as a book, that is among those sold in the largest numbers. best'sell'er·dom n., best'-sell'ing adj. |
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