noun
also tang·ka or tan·ka or tan·kah təŋˈgä, -ŋˈkä
( -s )
Etymology: Hindi ṭaṅgā
: any of various Eastern coins: as
a. : a former silver coin of India corresponding to the rupee
b. : an old debased silver coin of Tibet
c. : a bronze coin of Portuguese India and corresponding unit of value equal to 1/16 rupia