This tiger is one of the largest of all the big cats (6)

I believe the answer is:

bengal

(Other definitions for bengal that I've seen before include "The Indian tiger is a gal, Ben" , "Bay of -- forms part of the Indian Ocean" , "old Indian province" , "Bay of - lies between India and Myanmar" , "Bay of - is E. of India" .)

I've seen this clue in The Irish Times.

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