Definition of "tonga"

tonga¹

noun
plural tongas
1. (India) A light, two-wheeled, horse-drawn carriage used for transportation in India, Pakistan, and Bangladesh.
  Quotations
  Coming up along the Cart-Road a tonga passed me, and my pony, tired with standing so long, set off at a canter.
  1890, Rudyard Kipling, Plain Tales from the Hills
  When his tyre went flat, he leapt off and shouted for a tonga.
  1924, EM Forster, A Passage to India, Penguin, published 2005, page 13

tonga²

noun
uncountable
1. (medicine) A drug useful in neuralgia, derived from a Fijian plant supposed to be of the aroid genus Epipremnum.