Crossword Genius

As hooter is heard, votes against (4)

Ross

I believe the answer is:

noes

'votes against' is the definition.
('no' votes)

I don't understand the rest of the clue.

(Other definitions for noes that I've seen before include "they are dissenting" , "negative responses" , "more than one refusal" , "Negative votes as at committee meetings" , "denials" .)

I've seen this clue in The Times.
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