'Civilian' definitions:

Definition of 'civilian'

From: WordNet
adjective
Associated with civil life or performed by persons who are not active members of the military; "civilian clothing"; "civilian life" [ant: military]
noun
A nonmilitary citizen [ant: man, military man, military personnel, serviceman]

Definition of 'Civilian'

From: GCIDE
  • Civilian \Ci*vil"ian\, n. [From Civil]
  • 1. One skilled in the civil law. [1913 Webster]
  • Ancient civilians and writers upon government. --Swift. [1913 Webster]
  • 2. A student of the civil law at a university or college. --R. Graves. [1913 Webster]
  • 3. One whose pursuits are those of civil life, not military or clerical. [1913 Webster]

Synonyms of 'civilian'

From: Moby Thesaurus