Crossword Genius

Revolutionary vehicle (5)

Ross

I believe the answer is:

cycle

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

This clue could be a double definition.

'revolutionary' is the first definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'vehicle' is the second definition.
(cycle is a kind of vehicle)

Can you help me to learn more?

(Other definitions for cycle that I've seen before include "Periodic sequence" , "Repeated series of events" , "Series of works; bike" , "Come round" , "go around" .)

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