The Collaborative International Dictionary of English v.0.48:

Vantage \Van"tage\, v. t.
   To profit; to aid. [Obs.] --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Vantage \Van"tage\ (v[.a]n"t[asl]j; 48), n. [Aphetic form of OE.
   avantage, fr. F. avantage. See Advantage.]
   1. Superior or more favorable situation or opportunity; gain;
      profit; advantage. [R.]
      [1913 Webster]

            O happy vantage of a kneeling knee!   --Shak.
      [1913 Webster]

   2. A position offering a superior view of a scene or
      situation; -- used literally and figuratively; as, from
      the vantage of hindsight; also called vantage point.
      [PJC]

   3. (Tennis) The first point scored after deuce; advantage[5].
      [Brit.]
      [1913 Webster]

   Note: When the server wins this point, it is called vantage
         in; when the receiver, or striker out, wins, it is
         called vantage out.
         [1913 Webster]

   To have at vantage, to have the advantage of; to be in a
      more favorable condition than. "He had them at vantage,
      being tired and harassed with a long march." --Bacon.

   Vantage ground, superiority of state or place; the place or
      condition which gives one an advantage over another. "The
      vantage ground of truth." --Bacon.
      [1913 Webster]

            It is these things that give him his actual
            standing, and it is from this vantage ground that he
            looks around him.                     --I. Taylor.
      [1913 Webster]

WordNet (r) 3.0 (2006):

vantage
    n 1: place or situation affording some advantage (especially a
         comprehensive view or commanding perspective)
    2: the quality of having a superior or more favorable position;
       "the experience gave him the advantage over me" [syn:
       advantage, vantage] [ant: disadvantage]

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "vantage":
   advantage, allowance, ambit, angle, angle of vision, bailiwick,
   bulge, coign of vantage, constituency, deadwood, draw, drop, edge,
   flying start, footing, handicap, head start, inside track, jump,
   mental outlook, odds, orbit, outlook, point of view, running start,
   something extra, something in reserve, sphere of influence,
   stamping ground, standpoint, start, territory, turf, upper hand,
   vantage ground, vantage point, viewpoint, whip hand



U.S. Gazetteer Places (2000):

Vantage, WA -- U.S. Census Designated Place in Washington
   Population (2000):    70
   Housing Units (2000): 39
   Land area (2000):     0.318660 sq. miles (0.825326 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.318660 sq. miles (0.825326 sq. km)
   FIPS code:            74200
   Located within:       Washington (WA), FIPS 53
   Location:             46.946710 N, 119.991758 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Vantage, WA
    Vantage