a loose outer piece of clothing without sleeves, that fastens at the neck, and is worn instead of a coat

something that hides, covers, or keeps something else secret

The restaurant he owned was just a cloak for (= hid) his drug-dealing activities. 他开那家餐馆不过是为他从事毒品交易作掩护。

They left the house under cloak of darkness. 他们趁着天黑离开了那所房子。

to cover or hide something

He has always kept his love affairs cloaked in secrecy (= kept them secret). 他总是隐瞒他的风流韵事。

The river is often cloaked in mist in the early morning. 清晨，这条河上常常是雾霭弥漫。