What does blanket mean?
A blanket is a large piece of thick, soft material—typically wool, cotton, fleece, or synthetic fibre—used chiefly to keep people warm, most familiarly as a bed covering. The word extends naturally to any broad, enveloping layer that resembles one: a blanket of snow, fog, or darkness can settle over a landscape, and a blanket of secrecy may shroud an institution. As a verb, to blanket something is to cover it completely and evenly, as when frost blankets a field overnight. In adjectival use, blanket describes actions applied without exception—a blanket ban, blanket insurance coverage, a blanket statement—emphasising totality rather than discrimination. Idiomatically, a 'wet blanket' is someone who dampens enthusiasm, while 'the blanket' has long served as shorthand for basic shelter and warmth, as in the expression of having only 'a roof and a blanket'. Derived from French blanc, meaning white, the word carries connotations of comfort, protection, and uniform concealment.
A large piece of thick woven fabric used to keep a person warm, especially in bed.
"He folded the woolen blanket neatly at the foot of the bed."
Also used figuratively for any thick, enveloping layer, as in 'a blanket of snow'.
To cover something completely and uniformly, as if with a blanket.
"Snow blanketed the hillsides well into spring."
Commonly used in passive constructions: 'The region was blanketed in fog.'
Standard plural for the noun form.
"The hotel supplied extra blankets for the cold night."
A 'wet blanket' literally meant a cloth thrown over a fire to put it out — before it came to mean the person who smothers everyone's fun.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of blanket
The word blanket comes from Middle English, borrowed from Old French blankette, a diminutive of blanc meaning 'white'. It originally referred to a heavy white woollen cloth, and the name of the Flemish weaver Thomas Blanket (14th century) is sometimes credited with popularising the fabric in England, though this is likely coincidence rather than true etymology. The root is Germanic in origin, ultimately related to Frankish *blank ('white, shining'), which also gives us the English words blank and blanch.
Related word forms
How blanket is actually used
In American English, 'comforter' is the usual word for a thick bed cover filled with insulation, while British English prefers 'duvet'; 'blanket' itself means an unfilled woven cover in both varieties. The figurative uses are common and neutral in register: 'blanket ban', 'blanket coverage', and 'a blanket of snow' all appear freely in journalism and everyday speech. Calling someone a 'wet blanket' is mildly disparaging.