legalese
     n : a style that uses the abstruse technical vocabulary of the
         law
Source: WordNet® 2.0

legalese n. 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.


Source: The Jargon File