Former name of Kolkata, capital of West Bengal, India (8)

I believe the answer is:

calcutta

(Other definitions for calcutta that I've seen before include "Old name for West Bengal?s largest city" , "Indian city-port noted for Black Hole" , "Capital of India until 1912 ..." , "Large city in India" , "West Bengal city" .)

I've seen this clue in The Mirror.

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