He's barely seen in camp (6)
I believe the answer is:
nudist
This clue might be a double definition.
'he's barely' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition. I also know that 'barely' relates to this answer.
'camp' is the second definition.
Although both the answer and definition are adjectives, I can't understand how one could define the other.
'seen in' is the link.
Can you help me to learn more?
(Other definitions for nudist that I've seen before include "Eve, perhaps" , "one economising on clothes" , "Person who believes in going unclothed" , "Dustin (anag)" , "to cover nether regions - one wouldn't!" .)