BLURB
endorsement, indorsement, blurb
(noun) a promotional statement (as found on the dust jackets of books); “the author got all his friends to write blurbs for his book”
Source: WordNet® 3.1
Etymology
Noun
blurb (plural blurbs)
A short description of a book, film, or other work, written and used for promotional purposes.
Verb
blurb (third-person singular simple present blurbs, present participle blurbing, simple past and past participle blurbed)
(transitive) To write or quote in a blurb.
(transitive) To supply with a blurb.
Source: Wiktionary