from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A unit of weight in the U.S. Customary System, an avoirdupois unit equal to 437.5 grains (28.35 grams).
- n. A unit of apothecary weight, equal to 480 grains (31.10 grams). See Table at measurement.
- n. A fluid ounce. See Table at measurement.
- n. A tiny bit: not an ounce of sympathy.
- n. See snow leopard.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The snow leopard, Uncia uncia.
- n. An avoirdupois ounce, weighing 1/16 of an avoirdupois pound, or 28.3495 grams.
- n. A troy ounce, weighing 1/12 of a troy pound, or 480 grains, or 31.1035 grams.
- n. A US fluid ounce, with a volume of 1/16 of a US pint, 1.804 687 cubic inches or 29.573 531 milliliters.
- n. A British imperial fluid ounce, with a volume of 1/20 of an imperial pint, 1.733871 cubic inches or 28.413063 milliliters.
- n. A little bit.
from the GNU version of the Collaborative International Dictionary of English
- n. A weight, the sixteenth part of a pound avoirdupois, and containing 28.35 grams or 4371/2 grains.
- n. The twelfth part of a troy pound; one troy ounce weighs 31.103486 grams, 8 drams, or 480 grains.
- n. Fig.: A small portion; a bit.
- n. A feline quadruped (Felis irbis syn. Felis uncia) resembling the leopard in size, and somewhat in color, but it has longer and thicker fur, which forms a short mane on the back. The ounce is pale yellowish gray, with irregular dark spots on the neck and limbs, and dark rings on the body. It inhabits the lofty mountain ranges of Asia. Called also once.
from The Century Dictionary and Cyclopedia
- n. A weight, the twelfth part of a pound troy, and the sixteenth of a pound avoirdupois.
- n. A small quantity.
- n. In California, in the earlier years of the gold excitement, a Spanish double doubloon, or about sixteen dollars; the old doubloon onza of Spain.
- n. A carnivorous mammal, Felis irbis or F. uncia, of the cat family, Felidæ, closely related to but distinct from the other large spotted cats known as leopards or panthers; the snow-leopard or mountain panther.
- n. The bay lynx or the Canada lynx.
- n. An occasional name of the American jaguar, Felis onca.
- n. A gold coin of Australia struck in 1853.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a unit of weight equal to one sixteenth of a pound or 16 drams or 28.349 grams
- n. large feline of upland central Asia having long thick whitish fur
- n. a unit of apothecary weight equal to 480 grains or one twelfth of a pound
Middle English unce, from Old French, from Latin ūncia; see oi-no- in Indo-European roots.
Middle English unce, from Old French once, alteration of lonce, from Vulgar Latin *luncea, from Latin lynx, lync-, lynx, from Greek lunx; see leuk- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From French once, from lonce ("lynx"), by false division (the l was thought to be the article), from Latin lynx, from Ancient Greek λύγξ ("lynx"). Interestingly, the taxon of the snow leopard is a Latinisation using the root of ounce (1). (Wiktionary)
From Middle French once, from Latin uncia ("1/12 part"), from ūnus ("one"). Compare inch. (Wiktionary)