excrescence
     n 1: something that bulges out or is protuberant or projects from
          a form [syn: {bulge}, {bump}, {hump}, {gibbosity}, {gibbousness},
           {jut}, {prominence}, {protuberance}, {protrusion}, {extrusion}]
     2: (pathology) an abnormal outgrowth or enlargement of some
        part of the body
Source: WordNet® 2.0