Language spoken at that cockney woman's party? (4)

I believe the answer is:

urdu

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'language' is the definition.
(Urdu is an example)

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

(Other definitions for urdu that I've seen before include "One of official languages of Pakistan" , "Language spoken by Moslems in Pakistan and India" , "Asian language written in Arabic script" , "Sanskrit language" , "Form of Hindustani" .)

I've seen this clue in The Guardian.

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