[1] : The Collaborative International Dictionary of English v.0.48

capitol \cap"itol\, l. capitolium, fr. caput head: cf. f.
   capitole. see chief.
   1913 webster
   1. the temple of jupiter, at rome, on the mona capitolinus,
      where the senate met.
      1913 webster

            comes caesar to the capitol to-morrow? --shak.
      1913 webster

   2. the edifice at washington occupied by the congress of the
      united states; also, the building in which the legislature
      of a state holds its sessions; a statehouse.
      1913 webster capitolian
see also:
chief 

[2] : WordNet (r) 2.0

capitol
     n 1: the federal government of the united states syn: washington
     2: the government building in washington where the united
        states senate and the house of representatives meet syn:
        capitol building
see also:
washington capitol building 

[3] : U.S. Gazetteer (1990)

capitol, mt
  zip codes: 59319

Capitol >> C Words
Capitol, definition of term: Capitol
capitol_pag1.html

Capitol Hill >> C Words
Capitol Hill, definition of term: Capitol Hill
capitol+hill_pag1.html