Somebody's rubber (7)
I believe the answer is:
masseur
This could be a double definition.
'somebody's' is the first definition.
Both the answer and definition are singular nouns.
Perhaps you can see a link between them that I don't see?
'rubber' is the second definition.
(someone who rubs or massages people)
Can you help me to learn more?
(Other definitions for masseur that I've seen before include "Professional rubber?" , "One rubbing and kneading painful muscles" , "Sue Mars (anag.)" , "One easing tension" , "One who kneads and strokes" .)