Crossword Genius

Carry-On cast (5)

Ross

I believe the answer is:

fling

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

This clue might be a double definition.

'carry-on' is the first definition.
Both the definition and answer are singular nouns.
Maybe there's an association between them I don't understand?

'cast' is the second definition.
(both can mean to throw)

Can you help me to learn more?

(Other definitions for fling that I've seen before include "Brief affair; throw" , "good time" , "quick one?" , "Throw; Scottish dance" , "See 7" .)

I've seen this clue in the Sydney Morning Herald.
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