ounce
‘a unit of measurement, the twelfth part of a pound, a small quantity or amount’
Lexical development traced from the Tamil root:
E. yndse, yntse, vnce, ownce < O.F. once, unce ‘a measure of weight or time’ < Lat. uncia ‘one-twelfth part’ < Lat. unus ‘one’ < awn < oi-no- < Tamil oṉṟu