Crossword Genius

Ring round for a smile (4)

Ross

I believe the answer is:

grin

'for a smile' is the definition.
('grin' can be a synonym of 'smile')

'ring round' is the wordplay.
'round' indicates anagramming the letters.
'ring' is an anagram of 'GRIN'.

(Other definitions for grin that I've seen before include "Smile - all that could be seen of the vanishing Cheshire Cat" , "Ring (anag.)" , "Beam" , "Cheesy smile?" , "Cheeky smile" .)

I've seen this clue in The Mirror.
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