D defs.my
Entry 2 senses Webster, 1913

Campaigner

/kăm-pān'-ẽr/ · Cam·paign·er · IPA /kæmˈpeɪnə(ɹ)/
01 n. One who has served in an army in several campaigns; an old soldier; a veteran.
  1. 1.
    One who has served in an army in several campaigns; an old soldier; a veteran.
  2. 2.
    one who is campaigning, especially a politician running for elective office, or one of his/her supporters.