NOUN (1)

1. a nonmilitary citizen;


ADJECTIVE (1)

1. associated with civil life or performed by persons who are not active members of the military;
- Example: "civilian clothing"
- Example: "civilian life"

The Collaborative International Dictionary of English v.0.48:

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]

WordNet (r) 3.0 (2006):

civilian
    adj 1: associated with civil life or performed by persons who
           are not active members of the military; "civilian
           clothing"; "civilian life" [ant: military]
    n 1: a nonmilitary citizen [ant: man, military man,
         military personnel, serviceman]