One with thick skin runs in circle to corral horse (5)
I believe the answer is:
rhino
'one with thick skin' is the definition.
The answer and definition can be both animals as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'runs in circle to corral horse' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'circle' becomes 'O' (O is a circle).
'to' means one lot of letters go next to another (I've seen this in other clues).
'corral horse' becomes 'h' (I am not sure about this - if you are sure you should believe this answer much more).
'in'+'o'='ino'
'ino' after 'h' is 'hino'.
'r'+'hino'='RHINO'
Can you help me to learn more?
(Other definitions for rhino that I've seen before include "In brief, a large horned African animal" , "Large animal with a horn on its snout, in short" , "Ready" , "Thick-skinned beast" , "Funds" .)