The captain, it seems, is a little jumpy (4)

I believe the answer is:

skip

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'the captain' is the definition.
(short for skipper)

I don't understand the remainder of the clue.

(Other definitions for skip that I've seen before include "Move with hops and steps" , "Container used to dump rubbish" , "Dumpster -- bypass" , "Omit - refuse container" , "Gambol" .)

I've seen this clue in the Evening Standard.

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