Foreign lady has dropped in after marriage (7)

I believe the answer is:

signora

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'foreign lady' is the definition.
(Italian equivalent to Mrs)

I can't explain the remainder of the clue.

(Other definitions for signora that I've seen before include "lady in Milan" , "wife on the Continent" , "married woman in Florence?" , "European lady" , "Young lady" .)

I've seen this clue in The Globe and Mail.

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