Canters around in hypnotic states (7)
I believe the answer is:
trances
'hypnotic states' is the definition.
(I've seen this in another clue)
'canters around' is the wordplay.
'around' indicates an anagram.
'canters' with letters rearranged gives 'TRANCES'.
'in' acts as a link.
(Other definitions for trances that I've seen before include "Hypnotic states" , "what half-conscious people experience?" , "Recants (anag.)" .)