Crossword Genius

Banter involving cattle food (5)

Ross

I believe the answer is:

chaff

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'banter' is the definition.
(synonyms)

I can't explain the remainder of the clue.

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(Other definitions for chaff that I've seen before include "Winnowed husks of grain" , "Husks - jokes" , "Worthless material (from corn)" , "Corn-husks separated from the grain" , "shells" .)

I've seen this clue in the Sydney Morning Herald.
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