Crossword Genius

The other side of a circle shown by black lines (7)

Ross

I believe the answer is:

obverse

'the other side' is the definition.
(thesaurus)

'a circle shown by black lines' is the wordplay.
'a circle' becomes 'O' (O is a circle).
'shown by' is a charade indicator (letters next to each other).
'black' becomes 'b' (as in pencil classifications).
'lines' becomes 'verse' (lines of poetry).
'o'+'b'+'verse'='OBVERSE'

'of' acts as a link.

(Other definitions for obverse that I've seen before include "Serving as a counter-part" , "Penny may present such a face" , "Logical proposition" , "Coin's head side" , "Opposite - side of coin" .)

I've seen this clue in The Guardian.
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