What is Blanket ?
Blanket is (noun) 1. a thick cover which you put over you to keep warm He woke up when the blankets fell off the bed. She wrapped the children up in blankets to keep them warm. 2. a thick layer A blanket of snow covered the fields. The motorway was covered in a blanket of fog. ((verb)) to cover with something The whole area was blanketed with snow.
source: Easier English, Student Dictionary Upper Intermediate Level