If something happens in the dead of night
, at dead of night
, or in the dead of winter
, it happens in the middle
part of the night or the winter, when it is darkest or coldest
I couldn't fly illegally into a country in the dead of night.
We buried it in the garden at dead of night.
Early one Thursday morning in the dead of winter I awoke to a blizzard.
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers