Moved sinuously, going topless or nude (5)
I believe the answer is:
naked
'nude' is the definition.
('naked' can be a synonym of 'nude')
'moved sinuously going topless' is the wordplay.
'moved sinuously' becomes 'snaked'.
'going topless' means to remove the first letter.
'snaked' with its first letter taken off is 'NAKED'.
'or' is the link.
(Other definitions for naked that I've seen before include "being exposed" , "Undressed" , "Without protection" , "Blatant" , "Unclad" .)