They chase members of burial party? (9)

I believe the answer is:

engravers

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'they' is the definition.
Both the definition and answer are plural nouns.
Maybe there's an association between them I don't understand?

'chase members of burial party?' is the wordplay.
'chase' becomes 'engrave' (I've seen this before).
'members of burial party?' becomes 'rs' (I can't explain this - if you can you should give a lot more credence to this answer).
'engrave'+'rs'='ENGRAVERS'

Can you help me to learn more?

(Another definition for engravers that I've seen is " They impress".)

I've seen this clue in The Guardian.

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