Barry, having lost his Rolls, still has a horse (3)
I believe the answer is:
bay
'horse' is the definition.
(bay is a kind of horse)
'barry having lost his rolls still has a' is the wordplay.
I cannot really understand how this works, but
'still' could be 'ay' (archaic term for 'always') and 'ay' is found in the answer.
A single letter 'b' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for bay that I've seen before include "Howl" , "Reddish-brown horse" , "Laurel tree - bark" , "laurel maybe" , "Chestnut" .)