Anaesthetic used there (5)

I believe the answer is:

ether

'anaesthetic' is the definition.
(ether is a kind of anaesthetic)

'used there' is the wordplay.
'used' indicates anagramming the letters.
'there' is an anagram of 'ETHER'.

(Other definitions for ether that I've seen before include "Former anaesthetic" , "Rare atmosphere" , "Chemical solvent" , "Type of chemical" , "Some were put out by this" .)

I've seen this clue in The Mirror.

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