blanketblan‧ket1 /ˈblæŋkɪt/ ●●● nounWord OriginCollocations1[countable] a heavy cover that keeps you warm in bed2[singular] literary a thick covering of something: There was a blanket of snow on the mountains. [Origin: 1300–1400 blanket “white cloth” (13–15 centuries), from Old French blankete, from blanc “white”]