Longman Dictionary of Contemporary English - cloak

~1 n 1 a warm piece of clothing like a coat without sleeves that hangs loosely from your shoulders 2 an organization, activity, or way of behaving that deliberately protects someone or keeps something secret + for  (The political party is used as a cloak for terrorist activities.) under the cloak of  (prejudice and hypocrisy hiding under the cloak of religion) ~2 v T usually passive 1 to deliberately hide facts, feelings etc so that people do not see or understand them  (cloaked in secrecy)  (The early stages of the talks have been cloaked in secrecy.) 2 cloaked in darkness/rust/snow etc literary covered in darkness, rust etc