endorsement

noun

1. 1

   the act of endorsing

   a star athlete can make a lot of money from endorsements

2. 2

   a signature that validates something

   the cashier would not cash the check without an endorsement

3. 3

   formal and explicit approval

   a Democrat usually gets the union's endorsement

4. 4

   a speech seconding a motion

   do I hear a second?

5. 5

   a promotional statement (as found on the dust jackets of books)

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