Source : Webster's Revised Unabridged Dictionary (1913)

Ingot \In"got\, n. [Prob. from AS. in in + ge['o]tan to pour:
   cf. F. linglot, LL. lingotus a mass of gold or silver,
   extended in the manner of a tongue, and G. einguss, LG. & OE.
   ingot ingot, a mold for casting metals in. See {Found} to
   cast, and cf. {Linget}, {Lingot}, {Nugget}.]
   1. That in which metal is cast; a mold. [Obs.]

            And from the fire he took up his matter And in the
            ingot put it with merry cheer.        --Chaucer.

   2. A bar or wedge of steel, gold, or other malleable metal,
      cast in a mold; a mass of unwrought cast metal.

            Wrought ingots from Besoara's mine.   --Sir W.
                                                  Jones.

   {Ingot mold}, a box or mold in which ingots are cast.

   {Ingot iron}. See {Decarbonized steel}, under {Decarbonize}.

Source : WordNet®

ingot iron
     n : iron of high purity