Maverick actor to fly fuel-efficiently? (6)

I believe the answer is:

cruise

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

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for cruise that I've seen before include "Holiday afloat - Kidman's ex" , "Coast" , "Holiday at sea" , "Sea trip" , "Sail on a ship" .)

I've seen this clue in The Independent.

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