A blurb is a short description written to make people interested in a book, movie, product, or event. When you pick up a novel and flip it over, that paragraph on the back cover explaining what the story is about? That's a blurb. It gives you just enough information to decide whether you want to read the book without spoiling the plot.

Blurbs are carefully crafted to sound exciting and appealing. A blurb for an adventure novel might start with “When twelve-year-old Maya discovers a mysterious map in her grandmother's attic...” to hook potential readers. A blurb for a science documentary might promise “stunning footage” and “surprising discoveries.”

Publishers, authors, and marketers spend significant time perfecting blurbs because a good one can convince someone to buy or watch something, while a boring one might cause them to put it back on the shelf. You'll find blurbs on websites, in catalogs, on movie posters, and in app stores.

The word blurb itself sounds a bit funny and informal, which fits its purpose: blurbs are meant to be punchy and attention-grabbing, not formal or academic. When someone asks you to “write a blurb” about your science fair project, they want a brief, engaging summary that makes people curious to learn more.