Where to wear a watch (5)
I believe the answer is:
wrist
'where to wear a watch' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for wrist that I've seen before include "Joint (the carpus)" , "Arm to hand connection, the carpus" , "Joint at end of arm" , "Type of 1 ac" , "Where to keep watch" .)