All night refreshment ? (5)
I believe the answer is:
sleep
This clue might be a double definition.
'all night' is the first definition.
The definition and answer can be both states of affairs as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'refreshment ?' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
Can you help me to learn more?
(Other definitions for sleep that I've seen before include "Shut-eye" , "Be dormant" , "Natural state of unconscious rest" , "Slumber" , "Drop off" .)