Reveal relative caught short by tree (7)
I believe the answer is:
uncloak
'reveal' is the definition.
(uncloak means to reveal or unveil)
'relative caught short by tree' is the wordplay.
I cannot quite see how this works, but
'caught' could be 'c' (cricket abbreviation) and 'c' is present in the answer.
'tree' could be 'oak' (oak is a type of tree) and 'oak' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for uncloak that I've seen before include "[SHOW] (1 of 2)" , "Bare" .)