Discontinue giving a doctor work (4)

I believe the answer is:

drop

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'discontinue' is the definition.
(I know that drop is a more specific form of discontinue)

'doctor work' is the wordplay.
'doctor' becomes 'dr' (abbreviation).
'work' becomes 'op' (short for opus).
'dr'+'op'='DROP'

'giving a' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for drop that I've seen before include "Small drink" , "Sink; sweet; set down" , "Finish with" , "down, say, casually" , "Discontinue; sink" .)

I've seen this clue in the Evening Standard.

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