Either end of Jedi master's belt (3)
I believe the answer is:
obi
'belt' is the definition.
(type of Japanese belt)
'either end of jedi master's' is the wordplay.
I cannot really see how this works, but
'of' could be 'o' and 'o' is located in the answer.
The remaining letters 'bi' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for obi that I've seen before include "magic" , "Japanese dress" , "Garment" , "Broad sash worn with a kimono" , "Long cloth" .)