Noun

• 1. a promotional statement (as found on the dust jackets of books);

  "the author got all his friends to write blurbs for his book"

• 2. a speech seconding a motion;

  "do I hear a second?"

• 3. formal and explicit approval;

  "a Democrat usually gets the union's endorsement"

• 4. a signature that validates something;

  "the cashier would not cash the check without an endorsement"

• 5. the act of endorsing;

  "a star athlete can make a lot of money from endorsements"