The Collaborative International Dictionary of English v.0.48:

Malt \Malt\, v. t. [imp. & p. p. Malted: p. pr. & vb. n.
   Malting.]
   To make into malt; as, to malt barley.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Malt \Malt\, v. i.
   To become malt; also, to make grain into malt. --Mortimer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Malt \Malt\ (m[add]lt), n. [AS. mealt; akin to D. mout, G. malz,
   Icel., Sw., & Dan. malt, and E. melt. [root]108. See Melt.]
   Barley or other grain, steeped in water and dried in a kiln,
   thus forcing germination until the saccharine principle has
   been evolved. It is used in brewing and in the distillation
   of whisky.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Malt \Malt\, a.
   Relating to, containing, or made with, malt.
   [1913 Webster]

   Malt liquor, an alcoholic liquor, as beer, ale, porter,
      etc., prepared by fermenting an infusion of malt.

   Malt dust, fine particles of malt, or of the grain used in
      making malt; -- used as a fertilizer. " Malt dust consists
      chiefly of the infant radicle separated from the grain."
      --Sir H. Davy.

   Malt floor, a floor for drying malt.

   Malt house, or Malthouse, a house in which malt is made.


   Malt kiln, a heated chamber for drying malt.
      [1913 Webster]

WordNet (r) 3.0 (2006):

malt
    n 1: a milkshake made with malt powder [syn: malted, malt,
         malted milk]
    2: a lager of high alcohol content; by law it is considered too
       alcoholic to be sold as lager or beer [syn: malt, malt
       liquor]
    3: a cereal grain (usually barley) that is kiln-dried after
       having been germinated by soaking in water; used especially
       in brewing and distilling
    v 1: treat with malt or malt extract; "malt beer"
    2: turn into malt, become malt
    3: convert grain into malt
    4: convert into malt