Past tense of blanket; covered completely with a blanket or with a layer of something; or suppressed or concealed.
From blanket plus -ed. Blanket originally meant a woolen covering, named after Thomas Blanket, a Flemish weaver. As a verb, it developed the meaning 'to cover completely,' and metaphorically 'to suppress or hide.'
It's wild that the word 'blanket' likely comes from a real person's name—Thomas Blanket, a 14th-century Flemish weaver in Belgium. Medieval quality products got named after their makers, like 'sandwich' from the Earl of Sandwich.
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