A city, not on for importing source of macadamia nut (6)

I believe the answer is:

almond

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'nut' is the definition.
(almond is a type of nut)

I don't understand the rest of the clue.

(Other definitions for almond that I've seen before include "Edible nut" , "Nut which provides cake icing" , "Nutlike seed" , "Nut often used in cake icing (6)." , "one of the nuts" .)

I've seen this clue in The Times.

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