ounce

noun8

1. •
   An avoirdupois ounce, weighing ¹⁄₁₆ of an avoirdupois pound, or 28.349523125 grams.
2. •
   A troy ounce, weighing ¹⁄₁₂ of a troy pound, or 480 grains, or 31.1034768 grams.
3. •
   (figurative) Any small amount, a little bit.

   • He didn't feel even an ounce of regret for his actions.
4. •
   A US fluid ounce, with a volume of ¹⁄₁₆ of a US pint, 1.804688 cubic inches or 29.5735295625 millilitres.
5. •
   A British imperial fluid ounce, with a volume of ¹⁄₂₀ of an imperial pint, 1.733871 cubic inches or 28.4130625 millilitres.
6. •
   Synonym of snow leopard, Panthera uncia.
7. •
   Synonym of onza, a particularly aggressive cougar or jaguarundi in Mexican folklore.

   • The ounce, a leopard-like creature, is dreaded for its depredations by the Indians of Brazil. — 1911
8. •
   (no longer used) A large wild feline, such as a lynx or cougar.

   • The Ounce or the vvilde Cat, is as big as a mungrell dog, this creature is by nature feirce, and more dangerous to bee met vvithall than any other creature, not fearing eyther dogge or man; […] — 1634