Crossword Genius

Shoot up a locomotive (6)

Ross

I believe the answer is:

rocket

I'm a little stuck... Click here to teach me more about this clue!

'shoot up' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for rocket that I've seen before include "Shoot upwards" , "Element in firework display" , "Edible plant; weapon" , "that should take off?" , "Space missile" .)

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