Crossword Genius

Fox eating a waste product in fungi (10)

Ross

I believe the answer is:

toadstools

'fungi' is the definition.
(toadstool is a kind of fungus)

'fox eating a waste product' is the wordplay.
'fox' becomes 'tod' (historic term).
'eating' indicates putting letters inside.
'waste product' becomes 'stools'.
'tod' placed around 'a' is 'toad'.
'toad'+'stools'='TOADSTOOLS'

'in' acts as a link.

I've seen this clue in The Guardian.
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