Definition of: endorsement

(in·dôrs′mənt) noun
1. The writing of one's name on the back of a note, check, etc.
2. The act of ratification; approval.
3. The act or method by which bills, notes, and other negotiable instruments are transferred.
4. Any writing on the back of a document.
5. A rider attached to an insurance policy to modify the original contract. Also spelled indorsement.