mass noun
1- the disguising of military personnel, equipment, and installations by painting or covering them to make them blend in with their surroundings军事伪装：
on the trenches were pieces of turf which served for camouflage
战壕上有一块块用作伪装的草皮
as modifier camouflage nets.伪装网。
1.1
- clothing or materials used for such a purpose伪装服; 伪装物：
figures dressed in army camouflage.
穿军用伪装服的人。
1.2
- the natural colouring or form of an animal which enables it to blend in with its surroundings（动物的）天然保护色：
the whiteness of polar bears provides camouflage.
北极熊的白色是它的天然保护色。
1.3
- figurative actions or devices intended to disguise or mislead〈喻〉伪装（或误导）的行为（或装置）：
much of my apparent indifference was merely protective camouflage.
我表面上的无动于衷大多只是保护性的掩饰。
with obj.(常作be camouflaged)
1- hide or disguise the presence of (a person, animal, or object) by means of camouflage伪装; 掩饰, 遮掩（人、动物或物体）：
the caravan was camouflaged with netting and branches from trees
运输车队用网和树枝来作掩护
1.1
- conceal the existence of (something undesirable)掩盖, 掩饰：
grievances should be discussed, not camouflaged.
委屈应该讲出来, 不要闷在心里。
词源
First World War: from French, from camoufler 'to disguise' （originally thieves' slang）, from Italian camuffare 'disguise, deceive', perhaps by association with French camouflet 'whiff of smoke in the face'.