Crossword Genius

Reeked of hunting ground? Have surgery (2,5,3,5)

Ross

I believe the answer is:

go under the knife

I'm a little stuck... Click here to teach me more about this clue!

'surgery' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'reeked of hunting ground?' is the wordplay.
'ground?' is an anagram indicator ('grind' the letters into a new form).
'reeked'+'of'+'hunting'='reekedofhunting'
'reekedofhunting' is an anagram of 'GO UNDER THE KNIFE'.

'have' acts as a link.

Can you help me to learn more?

I've seen this clue in The Hindu.
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