Shout at us “Break!” (6)

I believe the answer is:

hiatus

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'break' is the definition.
(I know that hiatus is a type of break)

'shout at us' is the wordplay.
'shout' becomes 'hi' (I can't justify this - if you can you should give a lot more credence to this answer).
'hi'+'at'+'us'='HIATUS'

Can you help me to learn more?

(Other definitions for hiatus that I've seen before include "A gap or lacuna" , "Pause; discontinuity" , "Brief respite" , "Opening" , "A lacuna or interruption" .)

I've seen this clue in the Evening Standard.

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