ADJECTIVE (3)

1. being on the outside or further from a center;
- Example: "spent hours adorning the outer man"
- Example: "the outer suburbs"

2. located outside;
- Example: "outer reality"

3. being on or toward the outside of the body;
- Example: "the outer ear"

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

   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.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Outer \Out"er\, n. [From Out, v.]
   One who puts out, ousts, or expels; also, an ouster;
   dispossession. [R.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

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

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "outer":
   apparent, cortical, epidermic, exomorphic, exterior, external,
   extrinsic, fringe, open, out, outermost, outlying, outmost,
   outside, outstanding, outward, outward-facing, peripheral, public,
   roundabout, seeming, superficial, surface