Duke in gumboots, but otherwise naked (9)
I believe the answer is:
ellington
'duke' is the definition.
(I've seen this in another clue)
'in gumboots but otherwise naked' is the wordplay.
I cannot quite understand how this works, but
'in' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ellington that I've seen before include "Duke --, twentieth century band leader" , "Duke - (Mood Indigo)" , "Duke (of jazz)" , "One Duke" , "Musician" .)