NOUN:
1.An outward semblance that misrepresents the true nature of something
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
3.Device or stratagem for concealment or deceit
4.The act of concealing the identity of something by modifying its appearance

VERB
Disguise by camouflaging; exploit the natural surroundings to disguise something
"The troops camouflaged themselves before they went into enemy territory"