Legendary monster bore scar centrally (4)
I believe the answer is:
orca
'legendary monster' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'bore scar centrally' is the wordplay.
'bore' becomes 'or' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'centrally' indicates the central letters.
The middle of 'scar' is 'ca'.
'or'+'ca'='ORCA'
Can you help me to learn more?
(Other definitions for orca that I've seen before include "Massive killer" , "Killer at sea" , "Sea creature" , "swimmer in black and white" , "27 [WHALE]" .)