tanga noun2 •A pair of tanga briefs. •(historical) Any of various former Asian coins, including: a coin of Portuguese India worth one tenth of a rupee; a gold coin of India issued by various Muslim rulers; a silver coin of India, also issued by Muslim rulers; and a former silver coin of Tibet.The prices range from 120 tangas = Rupees 25 to 400 tangas = Rupees 80. — 1875 formstangas