Definition of "malt"

noun:
- Malted grain (sprouted grain) (usually barley), used in brewing and otherwise.
  
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- Malt liquor, especially malt whisky.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- Short for "malted milk shake", a milkshake with malted milk powder added for flavor.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- Maltose-rich sugar derived from malted grain.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
verb:
- To convert a cereal grain into malt by causing it to sprout (by soaking in water) and then halting germination (by drying with hot air) in order to develop enzymes that can break down starches and proteins in the grain.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License