Crossword Genius

Poison, sound the alarm (6)

Ross

I think it could be either:

Which length description are you looking for?:

5

6

tocsin

'the alarm' is the definition.
(tocsin is a kind of alarm)

'poison sound' is the wordplay.
'poison' becomes 'toxin' (toxin is a kind of poison).
'sound' shows a homophone (sound like).
'toxin' is a homophone of 'TOCSIN'.

(Other definitions for tocsin that I've seen before include "Alarm bell to be found in Scot" , "An alarm bell or signal" , "Warning bell" , "Con, sit and produce an alarmbell" , "alarm call" .)

I've seen this clue in The Telegraph.
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