Initial pile-up called minor accident (5)

I believe the answer is:

prang

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'minor accident' is the definition.
(I've seen this before)

'initial pile-up called' is the wordplay.
'initial' suggests taking the first letters.
'up called' becomes 'rang' ('ring' can be a synonym of 'call'. I am not sure about the 'up' bit.).
The first letter of 'pile' is 'p'.
'p'+'rang'='PRANG'

Can you help me to learn more?

(Other definitions for prang that I've seen before include "Car accident, usually not too serious" , "Plane or car crash" , "Car collision" , "Possible argument with van" , "Crash (slang)" .)

I've seen this clue in the Sydney Morning Herald.

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