cloak in WordNet English dictionary

1. a loose outer garment
   cloak 
   
2. anything that covers or conceals
   cloak 
   

1. cover with or as if with a cloak
   "cloaked monks"
   cloak 
   
2. cover as if with clothing
   "the mountain was clothed in tropical trees"
   clothe  cloak  drape  robe 
   
3. hide under a false appearance
   "He masked his disappointment"
   dissemble  cloak  mask