Places to undergo surgery with large knife (7)
I believe the answer is:
scalpel
'knife' is the definition.
(scalpel is a kind of knife)
'places to undergo surgery with large' is the wordplay.
I cannot really see how this works, but
an anagram of 'places' is 'scalpe' which is present in the answer.
'large' could be 'l' and 'l' is found within the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for scalpel that I've seen before include "Sharp cutting tool" , "Surgeon's tool" , "Small surgical knife" , "Medical knife" , "Theatrical knife?" .)