Ruining tie, getting cross in way out (4)

I believe the answer is:

exit

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'way out' is the definition.
(I know that way out can be written as exit)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for exit that I've seen before include "Way to leave" , "Leave the building" , "farewell!" , "Player's departure" , "Actor's departure" .)

I've seen this clue in The Mirror.

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