Could a bedfellow be called a sleeping one? (7)
I believe the answer is:
partner
'one?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for partner that I've seen before include "Other half?" , "Spouse or business collaborator" , "Mate or business associate" , "Ally" , "Consort" .)