Crossword Genius

Grand artist and I squabble about muralist's works (8)

Ross

I believe the answer is:

graffiti

I'm a little stuck... Click here to teach me more about this clue!

'muralist's works' is the definition.
I can't judge whether this defines the answer.

'grand artist and i squabble about' is the wordplay.
'grand' becomes 'g' (G is short for grand as in a thousand).
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'and' says to put letters next to each other.
'squabble' becomes 'tiff' (synonyms).
'about' says the letters should be written backwards.
'i'+'tiff'='itiff'
'itiff' written backwards gives 'ffiti'.
'g'+'ra'+'ffiti'='GRAFFITI'

Can you help me to learn more?

(Other definitions for graffiti that I've seen before include "Scribblings on the walls of buildings" , "Wall scribbles" , "Wall-scribblings" , "spray-painting" , "Wall scribblings" .)

I've seen this clue in The Guardian.
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