Give envoy image after first couple have left to take journey (6)

I believe the answer is:

voyage

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'journey' is the definition.
(I know that voyage is a type of journey)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for voyage that I've seen before include "Cruise - passage" , "Journey by water or through space" , "Long sea trip" , "See 7" , "Travel by water" .)

I've seen this clue in The Irish Times.

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