banyan [17] Banyan originally meant ‘Hindu trader’. It is an arabization of Gujarati vāniyān ‘traders’, which comes ultimately from Sanskrit vanija ‘merchant’ (the Portuguese version, banian, produced an alternative English spelling). When European travellers first visited Bandar Abbas, a port on the Persian Gulf, they found there a pagoda which the banyans had built in the shade of a large Indian fig tree. They immediately applied the name banyan to this particular tree, and the term later widened to include all such trees.

John Ayto, Word Origins: The Secret histories of English Words from A to Z, 2nd ed. (A & C Black, 2005)