Steals a ring on board (6)

I believe the answer is:

slinks

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'steals' is the definition.
The answer and definition can be both to do with motion as well as being verbs in their -s form.
Perhaps there's a link between them I don't understand?

'a ring on board' is the wordplay.
'a ring' becomes 'link' (I have seen 'Ring of chain' mean 'link' so perhaps 'ring' could also mean 'link').
'on' means one lot of letters goes inside another.
'board' becomes 'ss' (I've seen this in other clues).
'link' placed within 'ss' is 'SLINKS'.

Can you help me to learn more?

(Another definition for slinks that I've seen is " Moves sneakingly".)

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

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