Best Seller এর বাংলা অর্থ কি? Best Seller Idiom meaning in Bengali? Best Seller = সবচেয়ে বেশি বিক্রি হওয়া বই(A book that sells in very large number, A product has sold in very large numbers) Some sentences using the idiom “Best Seller “: His book became a national best seller. This book was the quickest…