Definition of "endorsement"

endorsement

noun
countable and uncountable, plural endorsements
1. The act or quality of endorsing
  Quotations
  Rank-and-file progressives don’t usually think of the immigration policies they support—expanding refugee quotas, easing restrictions on some classes of immigrants, and ending family separation—as an endorsement of detention, deportation, and racialized terror.
  2019 July 15, Greg Afinogenov, “The Jewish Case for Open Borders”, in Jewish Currents‎, number Summer 2019
2. An amendment or annotation to an insurance contract or other official document (such as a driving licence).
3. (aviation) An instructor's signed acknowledgement of time practising specific flying skills.
4. (education, certification) Permission to carry out a specific skill or application in a field in which the practitioner already has a general licence.
5. Sponsorship, in means of money, by a company, business or enterprise.
6. Support from an important, renowned figure of a media (celebrity, politics, sports, etc.), to get back up.