Freezing from anaesthetic in general? (5)
I believe the answer is:
icing
'freezing' is the definition.
(icing is a kind of freezing)
'from anaesthetic in general?' is the wordplay.
'from' says the answer is hidden in the clue.
'ICING' is hidden within 'anaesthetic in general'.
(Other definitions for icing that I've seen before include "Sugar coating - a danger to aircraft, on roads etc" , "piece of cake?" , "Sugar-coating" , "Finishing cake" , "Cake covering" .)