ˌLand of ˈNod, the
an old-fashioned or humorous expression meaning the imaginary place you go to when you are asleep, used especially when you are talking to or about children:
The children are all safely in the Land of Nod.

[TahlilGaran] Dictionary of Contemporary English ▲

land of Nod
sleep
I entered the land of Nod as soon as my head hit the pillow.

[TahlilGaran] English Idioms Dictionary ▲

land of nod
n. phr. Sleep.
The little girl went off to the land of nod.

[TahlilGaran] English Idioms Dictionary ▲