Arm found in unwrapped tents (4)
I believe the answer is:
epee
'arm' is the definition.
(epee is a kind of arm)
'unwrapped tents' is the wordplay.
'unwrapped' indicates the central letters (the letters which wrap the word are removed).
'tents' becomes 'tepees' (tepee is a kind of tent).
The middle of 'tepees' is 'EPEE'.
'found in' is the link.
(Other definitions for epee that I've seen before include "sharp-edged implement" , "sports equipment" , "Use it to fence" , "Fencer's weapon" , "Fencing sword, heavier than a foil" .)