Look for movement in rolling stock, wasting seconds (4)

I believe the answer is:

hunt

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'look for' is the definition.
(to hunt for something is to look for it)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for hunt that I've seen before include "F1 driver" , "Look high and low" , "Meeting with hounds" , "Search; pursue and kill" , "Meet - famous mountaineer" .)

I've seen this clue in The Independent.

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