Passed open ring all right (8)
I believe the answer is:
overtook
'passed' is the definition.
(I've seen this in another clue)
'open ring all right' is the wordplay.
'open' becomes 'overt' (associated in meaning).
'ring' becomes 'O' (O is the shape of a ring).
'all right' becomes 'ok' (synonyms).
'overt'+'o'+'ok'='OVERTOOK'
(Other definitions for overtook that I've seen before include "having gone to right" , "Caught up with and passed" , "Caught up with and went past" , "Caught unprepared" .)