Opening jump (5)

I believe the answer is:

start

This clue is a double definition.

'opening' is the first definition.
(I've seen this before)

'jump' is the second definition.
(as in starting or jumping in fear)

(Other definitions for start that I've seen before include "open" , "Origin" , "Initiate" , "Begin to recoil?" , "lead" .)

I've seen this clue in The Globe and Mail, The Telegraph and The Times.

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