Source : WordNet®

legalese
     n : a style that uses the abstruse technical vocabulary of the
         law

Source : Free On-Line Dictionary of Computing

legalese
     
        Dense, pedantic verbiage in a language description, product
        specification, or interface standard; text that seems designed
        to obfuscate and requires a {language lawyer} to {parse} it.
        Though hackers are not afraid of high information density and
        complexity in language (indeed, they rather enjoy both), they
        share a deep and abiding loathing for legalese; they associate
        it with deception, {suit}s, and situations in which hackers
        generally get the short end of the stick.