Source : Webster's Revised Unabridged Dictionary (1913)

Lingo \Lin"go\ (l[i^][ng]"g[-o]), n. [L. lingua tongue,
   language. See {Lingual}.]
   Language; speech; dialect. [Slang]

Source : WordNet®

lingo
     n : a characteristic language of a particular group (as among
         thieves); "they don't speak our lingo" [syn: {cant}, {jargon},
          {slang}, {argot}, {patois}, {vernacular}]
     [also: {lingoes} (pl)]

Source : Free On-Line Dictionary of Computing

Lingo
     
        An animation scripting language.
     
        [MacroMind Director V3.0 Interactivity Manual, MacroMind
        1991].