Rare lily found broken in the chaff (8)

I believe the answer is:

raillery

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'the chaff' is the definition.
(thesaurus)

'rare lily found broken' is the wordplay.
'rare lily' anagrams to 'RAILLERY'.
However, I'm not sure how this is indicated.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for raillery that I've seen before include "Badinage" , "Playful satire" , "Light teasing repartee" , "Good-humoured teasing" , "(Example of) banter" .)

I've seen this clue in The Globe and Mail.

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