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
—n. 1. approval or sanction: The program for supporting the arts won the government's endorsement. 2. the placing of one's signature, instructions, etc., on a document. 3. the signature, instructions, etc., placed on the reverse of a commercial document, for the purpose of assigning the interest therein to another. 4. a clause under which the stated coverage of an insurance policy may be altered.