Prevent post getting broken (4)

I believe the answer is:

stop

'prevent' is the definition.
(stopping is a kind of preventing)

'post getting broken' is the wordplay.
'getting broken' is an anagram indicator.
'post' anagrammed gives 'STOP'.

(Other definitions for stop that I've seen before include "Check" , "Hold on" , "Quit" , "Withhold payment" , "Organ knob; get bus here" .)

I've seen this clue in The Times.

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