uncia

noun7

1. •
   (historical) The Roman ounce, 1/12 of a Roman pound.
2. •
   (historical) The Roman inch, 1/12 of a Roman foot.
3. •
   (historical) A bronze coin minted by the Roman Republic, 1/12 of an as.
4. •
   (historical) A Roman unit of land area, 1/12 of a jugerum.
5. •
   Synonym of twelfth.
6. •
   Synonym of ounce, the English and American avoirdupois unit of mass.
7. •
   (no longer used) A numerical coefficient in a binomial.