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8 definitions found
 for keystone
From The Collaborative International Dictionary of English v.0.48 :

  Keystone \Key"stone`\, n. (Arch.)
     The central or topmost stone of an arch. This in some styles
     is made different in size from the other voussoirs, or
     projects, or is decorated with carving. See Illust. of
     Arch.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

  keystone
      n 1: a central cohesive source of support and stability; "faith
           is his anchor"; "the keystone of campaign reform was the
           ban on soft money"; "he is the linchpin of this firm" [syn:
           anchor, mainstay, keystone, backbone, linchpin,
           lynchpin]
      2: the central building block at the top of an arch or vault
         [syn: keystone, key, headstone]

From Moby Thesaurus II by Grady Ward, 1.0 :

  68 Moby Thesaurus words for "keystone":
     apse, arcade, arcature, arch, arched roof, archway, basis,
     bench mark, camber, cardinal point, ceilinged roof, chief thing,
     climax, concameration, concha, core, cornerstone, cove, crisis,
     critical point, crux, cupola, dome, essence, essential,
     essential matter, first stone, footstone, foundation,
     foundation stone, fundamental, geodesic dome, gist, gravamen,
     great point, headstone, heart, high point, igloo, important thing,
     issue, kernel, landmark, main point, main thing, material point,
     meat, milestone, necessity, nub, ogive, pith, pivot, principle,
     quoin, real issue, salient point, sine qua non, skewback, span,
     substance, substantive point, the bottom line, the point,
     turning point, vault, vaulting, voussoir
  
  

From U.S. Gazetteer Places (2000) :

  Keystone, CO -- U.S. Census Designated Place in Colorado
     Population (2000):    825
     Housing Units (2000): 2606
     Land area (2000):     40.636910 sq. miles (105.249108 sq. km)
     Water area (2000):    0.006514 sq. miles (0.016872 sq. km)
     Total area (2000):    40.643424 sq. miles (105.265980 sq. km)
     FIPS code:            40550
     Located within:       Colorado (CO), FIPS 08
     Location:             39.604233 N, 105.948111 W
     ZIP Codes (1990):     80435
     Note: some ZIP codes may be omitted esp. for suburbs.
     Headwords:
      Keystone, CO
      Keystone
  

From U.S. Gazetteer Places (2000) :

  Keystone, FL -- U.S. Census Designated Place in Florida
     Population (2000):    14627
     Housing Units (2000): 5709
     Land area (2000):     36.078818 sq. miles (93.443706 sq. km)
     Water area (2000):    3.164101 sq. miles (8.194984 sq. km)
     Total area (2000):    39.242919 sq. miles (101.638690 sq. km)
     FIPS code:            36462
     Located within:       Florida (FL), FIPS 12
     Location:             28.127550 N, 82.589117 W
     ZIP Codes (1990):    
     Note: some ZIP codes may be omitted esp. for suburbs.
     Headwords:
      Keystone, FL
      Keystone
  

From U.S. Gazetteer Places (2000) :

  Keystone, IA -- U.S. city in Iowa
     Population (2000):    687
     Housing Units (2000): 281
     Land area (2000):     0.370289 sq. miles (0.959043 sq. km)
     Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
     Total area (2000):    0.370289 sq. miles (0.959043 sq. km)
     FIPS code:            41115
     Located within:       Iowa (IA), FIPS 19
     Location:             42.000915 N, 92.198544 W
     ZIP Codes (1990):     52249
     Note: some ZIP codes may be omitted esp. for suburbs.
     Headwords:
      Keystone, IA
      Keystone
  

From U.S. Gazetteer Places (2000) :

  Keystone, SD -- U.S. town in South Dakota
     Population (2000):    311
     Housing Units (2000): 209
     Land area (2000):     2.864807 sq. miles (7.419816 sq. km)
     Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
     Total area (2000):    2.864807 sq. miles (7.419816 sq. km)
     FIPS code:            33820
     Located within:       South Dakota (SD), FIPS 46
     Location:             43.893744 N, 103.426080 W
     ZIP Codes (1990):     57751
     Note: some ZIP codes may be omitted esp. for suburbs.
     Headwords:
      Keystone, SD
      Keystone
  

From U.S. Gazetteer Places (2000) :

  Keystone, WV -- U.S. city in West Virginia
     Population (2000):    453
     Housing Units (2000): 236
     Land area (2000):     0.324252 sq. miles (0.839808 sq. km)
     Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
     Total area (2000):    0.324252 sq. miles (0.839808 sq. km)
     FIPS code:            43516
     Located within:       West Virginia (WV), FIPS 54
     Location:             37.415119 N, 81.446082 W
     ZIP Codes (1990):    
     Note: some ZIP codes may be omitted esp. for suburbs.
     Headwords:
      Keystone, WV
      Keystone
  

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