Meal that interrupts a journey? (7)

I believe the answer is:

blowout

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'meal' is the definition.
(I have seen 'large meal' mean 'blowout' so perhaps 'meal' could also mean 'blowout')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for blowout that I've seen before include "Car's exploding tyre incident" , "Lavish meal (slang)" , "Heavy meal" , "large meal" , "lot to eat" .)

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