sleep a wink, not

not sleep a wink

To not get any sleep. Our newborn son is rather colicky, so my wife and I haven't slept a wink the last few nights.
See also: not, sleep, wink

sleep a wink, not

Not sleep at all, as in I couldn't sleep a wink last night. This expression, in which wink alludes to closing the eyes for sleep, was first recorded about 1325.
See also: not, sleep