Both Uses of

camouflage
in
In Cold Blood

Unless you include, as one must, the Holcomb School, a good-looking establishment, which reveals a circumstance that the appearance of the community otherwise camouflages: that the parents who send their children to this modern and ably staffed "consolidated" school-the grades go from kindergarten through senior high, and a fleet of buses transport the students, of which there are usually around three hundred and sixty, from as far as sixteen miles away-are, in general, a prosperous people.†
Chpt 1

camouflages = hides something by making it blend in with its surroundings; or hides the truth

In each room, in addition to an electric fan, a metal table, and folding metal chairs, there are camouflaged microphones, concealed tape recorders, and, set into the door, a mirrored one-way observation window.†
Chpt 3 *

camouflaged = hid something by making it blend in with its surroundings; or hid the truth

Definition:

hiding something by making it blend in with its surroundings

or:

hiding the truth

or:

something that hides or deceives