NOUN (2)

1. a mineral that contains metal that is valuable enough to be mined;

2. a monetary subunit in Denmark and Norway and Sweden; 100 ore equal 1 krona;

The Collaborative International Dictionary of English v.0.48:

Ore \Ore\ ([=o]r), n. [AS. [=a]r.]
   Honor; grace; favor; mercy; clemency; happy augury. [Obs.]
   --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ore \Ore\, n. [AS. [=o]ra; cf. [=a]r brass, bronze, akin to OHG.
   [=e]r, G. ehern brazen, Icel. eir brass, Goth. ais, L. aes,
   Skr. ayas iron. [root]210. Cf. Ora, Era.]
   [1913 Webster]
   1. The native form of a metal, whether free and uncombined,
      as gold, copper, etc., or combined, as iron, lead, etc.
      Usually the ores contain the metals combined with oxygen,
      sulphur, arsenic, etc. (called mineralizers).
      [1913 Webster]

   2. (Mining) A native metal or its compound with the rock in
      which it occurs, after it has been picked over to throw
      out what is worthless.
      [1913 Webster]

   3. Metal; as, the liquid ore. [R.] --Milton.
      [1913 Webster]

   Ore hearth, a low furnace in which rich lead ore is
      reduced; -- also called Scotch hearth. --Raymond.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ore
    n 1: a mineral that contains metal that is valuable enough to be
         mined
    2: a monetary subunit in Denmark and Norway and Sweden; 100 ore
       equal 1 krona

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "ore":
   argentite, arsenopyrite, bauxite, chalcocite, cinnabar, crude,
   galena, iron ore, ironstone, limonite, lodestone, magnetite,
   mineral, mineral-bearing material, mispickel, pyrite, raw material,
   rich ore, rich vein, rough diamond, siderite, stibnite,
   unanalyzed mass, unlicked cub, untreated mineral, virgin soil