What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
See definition of shut something off
1‘a door pivots to shut off the gallery’
close off, seal off, tape off, fence off, rope off, screen off, curtain off, cordon off, partition off, separate off, isolate, segregate, blockade, quarantine
seal, close, turn off, cut, stop, halt
enclose, encircle, surround