Stupefied animal gets a drink (9)
I believe the answer is:
catatonic
'stupefied' is the definition.
Although both the answer and definition are adjectives, I don't see how one could define the other.
'animal gets a drink' is the wordplay.
'animal' becomes 'cat' (cats are animals).
'gets' says to put letters next to each other.
'drink' becomes 'tonic' (tonic is a kind of drink).
'cat'+'a'+'tonic'='CATATONIC'
Can you help me to learn more?
(Other definitions for catatonic that I've seen before include "Behaving abnormally" , "In a stupefied state" , "Rigid and in a stupor through illness" , "Stupefied and immobile" , "Insensible" .)