Current affecting only part of body (7)
I believe the answer is:
topical
'current' is the definition.
(similar in meaning)
'affecting only part of body' is the wordplay.
I cannot quite understand how this works, but
'part' could be 'top' (top is a kind of part) and 'top' is located in 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 topical that I've seen before include "Applied externally" , "Dealing with current affairs" , "Of interest at the present time" , "currently newsworthy" , "Up to date" .)