endorsement

(noun) a promotional statement (as found on the dust jackets of books). Synonyms: indorsement, blurb. Examples: "The author got all his friends to write blurbs for his book."

(noun) a speech seconding a motion. Synonyms: second, secondment, indorsement. Examples: "Do i hear a second?."

(noun) formal and explicit approval. Synonyms: sanction, countenance, indorsement, warrant, imprimatur. Examples: "A democrat usually gets the union's endorsement."

(noun) a signature that validates something. Synonyms: indorsement. Examples: "The cashier would not cash the check without an endorsement."

(noun) the act of endorsing. Synonyms: indorsement. Examples: "A star athlete can make a lot of money from endorsements."