O'Connor might embrace convention (4)
I believe the answer is:
norm
'convention' is the definition.
(I've seen this in another clue)
'o'connor might embrace' is the wordplay.
'embrace' indicates a hidden word (I've seen 'embracing' mean this (the solution is embraced by words in the clue)).
'NORM' is hidden within 'oconnor might'.
(Other definitions for norm that I've seen before include "Something typical" , "Drawing stick" , "Standard regarded as typical" , "Mean" , "Benchmark" .)