Crossword Genius

On a farm, refuse drink very loudly (5)

Ross

I believe the answer is:

chaff

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'on a farm refuse' is the definition.
I can't tell whether this defines the answer.

'drink very loudly' is the wordplay.
'drink' becomes 'cha' (cha can mean tea).
'very loudly' becomes 'ff' (short for fortissimo, 'very loud' in music).
'cha'+'ff'='CHAFF'

Can you help me to learn more?

(Other definitions for chaff that I've seen before include "shells" , "Refuse from threshing" , "something worth little" , "Light-hearted banter" , "Light banter - husks from corn" .)

I've seen this clue in The Times.
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