From WordNet (r) 1.6 [wn]:

  definition
       n 1: a concise explanation of the meaning of a word or phrase or
            symbol
       2: clarity of outline; "exercise had give his muscles superior
          definition"

In warp definitions are something akin to, but not quite that same as, a "normal" definition. They exist to try and help provide some context. Either for the information contained in the top sections or other definitions. Users of the system may make changes to the definitions if they desire. See the Howto document which can be readed from help.