What is the meaning of Endorsement?

The act or quality of endorsing

An amendment or annotation to an insurance contract or other official document (such as a driving licence).

An instructor's signed acknowledgement of time practising specific flying skills.

Permission to carry out a specific skill or application in a field in which the practitioner already has a general licence.

Sponsorship, in means of money, by a company, business or enterprise.

Support from an important, renowned figure of a media (celebrity, politics, sports, etc.), to get back up.

Source: wiktionary.org