He's able to canter round the bend like a horse (7)
I believe the answer is:
centaur
'he's able to canter' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'the bend like a horse' is the wordplay.
I cannot really understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
'bend' could be 'u' (a U-bend is a kind of bend - pipe under sink) and 'u' is located in the answer.
'a' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'round' is the link.
Can you help me to learn more?
(Other definitions for centaur that I've seen before include "Mythical animal, half man and half horse" , "Mythical semi-equine beast" , "Mythical creature with horse's body and man's upper torso" , "Mythical equine creature" , "Mythical man-horse" .)