Definition: A book or other product that has sold in large numbers.

Alright class, settle down and let’s take a look! You’ve got a good question here, quite astute, About “bestsellers,” what exactly do they pursue? The dictionary gives you the gist, it's true, “A book or product that has sold in large numbers, too!” But let's break it down with a little rhyme, To really understand this concept of time. Think about your favorite treats, so sweet and grand, If everyone is buying them throughout the land! That’s what a bestseller truly does portray, It's the most popular choice, day after day! So "bestsellers" aren't just any old sale, They're items that are wildly appealing and prevail. They've captured many hearts, it’s plain to see, A top-selling title for you and for me! Does that make sense? Any questions bubbling up so bright?