The normal Romes for Catherine (4)
I believe the answer is:
parr
'catherine' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'the normal romes' is the wordplay.
'the normal' becomes 'par' (as in par for the course).
'romes' becomes 'r' (this might be a standard abbreviation of which I'm unaware).
'par'+'r'='PARR'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for parr that I've seen before include "Fish" , "Catherine --, Henry VIII's sixth wife" , "Catherine --, last wife of Henry VIII" , "Henry's sixth (his third 7!)" , "Young salmon with spots" .)