protrusion (
http://definr.com/protrusion)
n 1: something that bulges out or is protuberant or projects from
a form [syn:
bulge,
bump,
hump,
gibbosity,
gibbousness,
jut,
prominence,
protuberance,
extrusion,
excrescence]
2: the act of projecting out from something [syn:
projection,
jut,
jutting]