WordNet (r) 3.0 (2006):

camouflage
    n 1: an outward semblance that misrepresents the true nature of
         something; "the theatrical notion of disguise is always
         associated with catastrophe in his stories" [syn:
         disguise, camouflage]
    2: fabric dyed with splotches of green and brown and black and
       tan; intended to make the wearer of a garment made of this
       fabric hard to distinguish from the background [syn:
       camouflage, camo]
    3: device or stratagem for concealment or deceit
    4: the act of concealing the identity of something by modifying
       its appearance; "he is a master of disguise" [syn:
       disguise, camouflage]
    v 1: disguise by camouflaging; exploit the natural surroundings
         to disguise something; "The troops camouflaged themselves
         before they went into enemy territory"