Legless Uncle glad to go nude (6)
I believe the answer is:
unclad
'nude' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for unclad that I've seen before include "having abandoned habit" , "In one's birthday suit" , "Naked" , "Not dressed" , "nude" .)