Body-related NCO (8)
I believe the answer is:
corporal
'nco' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for corporal that I've seen before include "NCO next under a sergeant" , "in the flesh" , "Of the body, like NCO" , "Of the body, or army NCO" , "Like old-fashioned punishment" .)