Source : Webster's Revised Unabridged Dictionary (1913)

Outer \Out"er\ (out"[~e]r), a. [Compar. of {Out}.] [AS. [=u]tor,
   compar. of [=u]t, adv., out. See {Out}, {Utter}, a.]
   Being on the outside; external; farthest or farther from the
   interior, from a given station, or from any space or position
   regarded as a center or starting place; -- opposed to
   {inner}; as, the outer wall; the outer court or gate; the
   outer stump in cricket; the outer world.

   {Outer bar}, in England, the body of junior (or utter)
      barristers; -- so called because in court they occupy a
      place beyond the space reserved for Queen's counsel.

Outer \Out"er\, n.
   (a) The part of a target which is beyond the circles
       surrounding the bull's-eye.
   (b) A shot which strikes the outer of a target.

Outer \Out"er\, n. [From {Out}, v.]
   One who puts out, ousts, or expels; also, an ouster;
   dispossession. [R.]

Source : WordNet®

outer
     adj 1: being on the outside or further from a center; "spent hours
            adorning the outer man"; "the outer suburbs" [syn: {outer(a)}]
            [ant: {inner(a)}]
     2: located outside; "outer reality"
     3: being on or toward the outside of the body; "the outer ear"