a large piece of warm cloth, often made from wool or fleece, that you put over yourself or on a bed to keep warm
She pulled the blanket up to her chin on the cold night.
After the picnic, they sat on a wool blanket watching the sunset.
✦ Middle English blantket, from Old French blanquette “white cloth”, diminutive of blanc “white”.
a thick layer of something that completely covers an area, such as snow, fog, or smoke
A heavy blanket of fog covered the harbor at dawn.
The fields lay under a white blanket of snow.
affecting or covering everything or everyone, without making any exceptions
The government announced a blanket ban on smoking in public places.
The school imposed a blanket rule that phones must be switched off during class.
to cover something completely or in large amounts, like snow, smoke, or advertisements do
Snow began to blanket the rooftops as the storm moved in.
Advertisements blanketed the walls of the subway station.