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]