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appellor

American  
[uh-pel-awr, ap-uh-lawr] / əˈpɛl ɔr, ˈæp əˌlɔr /

noun

British Law.
  1. a person who prosecutes in an appellate proceeding.

  2. Obsolete. a person who accuses another in a criminal appeal.


Etymology

Origin of appellor

1400–50; late Middle English apelour < Anglo-French, Old French apeleor < Latin appellātor appellant. See appellate, -tor