Legless Uncle glad to go nude (6)

Ross

I believe the answer is:

unclad

I'm a little stuck... Click here to teach me more about this clue!

'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" .)

I've seen this clue in the Sydney Morning Herald.

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