Crossword Genius

Grimy around edge (3)

Ross

I believe the answer is:

rim

'edge' is the definition.
(I know that rim is a type of edge)

'grimy around' is the wordplay.
'around' indicates a hidden word.
'RIM' is hidden within 'grimy'.

(Other definitions for rim that I've seen before include "Edge - lip" , "Edge or margin" , "Curved edge" , "Raised edge of a round object" , "Edge, border" .)

I've seen this clue in The Mirror.
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