The Collaborative International Dictionary of English v.0.48:

Forge \Forge\ (f[=o]rj), n. [F. forge, fr. L. fabrica the
   workshop of an artisan who works in hard materials, fr. faber
   artisan, smith, as adj., skillful, ingenious; cf. Gr. ? soft,
   tender. Cf. Fabric.]
   1. A place or establishment where iron or other metals are
      wrought by heating and hammering; especially, a furnace,
      or a shop with its furnace, etc., where iron is heated and
      wrought; a smithy.
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            In the quick forge and working house of thought.
                                                  --Shak.
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   2. The works where wrought iron is produced directly from the
      ore, or where iron is rendered malleable by puddling and
      shingling; a shingling mill.
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   3. The act of beating or working iron or steel; the
      manufacture of metallic bodies. [Obs.]
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            In the greater bodies the forge was easy. --Bacon.
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   American forge, a forge for the direct production of
      wrought iron, differing from the old Catalan forge mainly
      in using finely crushed ore and working continuously.
      --Raymond.

   Catalan forge. (Metal.) See under Catalan.

   Forge cinder, the dross or slag form a forge or bloomary.


   Forge rolls, Forge train, the train of rolls by which a
      bloom is converted into puddle bars.

   Forge wagon (Mil.), a wagon fitted up for transporting a
      blackmith's forge and tools.

   Portable forge, a light and compact blacksmith's forge,
      with bellows, etc., that may be moved from place to place.
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The Collaborative International Dictionary of English v.0.48:

Portable \Port"a*ble\, a. [L. portabilis, fr. portare to carry:
   cf. F. portable. See Port demeanor.]
   1. Capable of being borne or carried; easily transported;
      conveyed without difficulty; as, a portable bed, desk,
      engine. --South.
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   2. Possible to be endured; supportable. [Obs.]
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            How light and portable my pain seems now! --Shak.
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   Portable forge. See under Forge.

   Portable steam engine. See under Steam engine.
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