Any small amount, a little bit.
A troy ounce, weighing ¹⁄₁₂ of a troy pound, or 480 grains, or 31.1035 grams.
A British imperial fluid ounce, with a volume of ¹⁄₂₀ of an imperial pint, 1.7339 cubic inches or 28.4131 millilitres.
An avoirdupois ounce, weighing ¹⁄₁₆ of an avoirdupois pound, or 28.3495 grams.
A US fluid ounce, with a volume of ¹⁄₁₆ of a US pint, 1.8047 cubic inches or 29.5735 millilitres.
Synonym of onza, a particularly aggressive cougar or jaguarundi in Mexican folklore.
Synonym of snow leopard, Panthera uncia.
A nearly worthless amount.