Nude king among those gawping (8)
I believe the answer is:
starkers
'those gawping' is the definition.
I can't judge whether this defines the answer.
'nude king among' is the wordplay.
'nude' becomes 'starers' (I can't justify this - if you can you should give a lot more credence to this answer).
'king' becomes 'K' (abbreviation for king in chess).
'among' means one lot of letters goes inside another (inserted letters are placed among others).
'starers' going around 'k' is 'STARKERS'.
Can you help me to learn more?
(Other definitions for starkers that I've seen before include "Bare (colloq.)" , "Completely naked" , "exposed" , "in his birthday suit?" , "23 [NUDIST]" .)