electric blanket

US /ɪˈlɛk.trɪk ˈblæŋ.kɪt/
UK /ɪˈlɛk.trɪk ˈblæŋ.kɪt/
"electric blanket" picture
1.

a blanket with an electric heating element inside, used for warming a bed

:
She turned on the electric blanket before getting into bed.
An electric blanket is a great way to stay warm in winter.