Crossword Genius

What King Edward did -- or Jack, Diana and Catherine (8)

Ross

I believe the answer is:

abdicate

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

'what king edward did' is the definition.
I can't tell whether this defines the answer.

'jack diana and catherine' is the wordplay.
'jack' becomes 'ab' (both can mean a sailor).
'diana' becomes 'di' (Di is short for Diana).
'and' says to put letters next to each other.
'catherine' becomes 'cate' (I've seen this in other clues).
'ab'+'di'+'cate'='ABDICATE'

'or' acts as a link.

Can you help me to learn more?

(Other definitions for abdicate that I've seen before include "quit" , "Resign from monarchy" , "Leave throne" , "Resign from or renounce the throne" , "Vacate the throne voluntarily" .)

I've seen this clue in The Telegraph.
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