The phrase "great blurb" refers to a short description or review that effectively captures the main idea or highlights of something, such as a book or a movie. It is typically well-written and grabs the reader's attention. Full definition
So, second to getting the cover professionally done, be sure to have a really great blurb as well. (advancedfictionwriting.com)
Finally, take a look at this book description from Dan Silva - it's a great example of a book that combines great blurbs with a book description that pulls you in from the first sentence. (huffingtonpost.com)
It's a great example of book promotion that combines great blurbs with a book description that pulls you in from the first sentence. (bookworks.com)