ounce

noun

1. a unit of weight equal to 437.5 grains or 1/16 pound (28.35 grams) avoirdupois.
2. a unit of 480 grains, 1/12 pound (31.1 grams) troy or apothecaries’ weight.
3. a fluid ounce.
4. a small quantity or portion.

noun

1. snow leopard.

noun

1. a unit of weight equal to one sixteenth of a pound (avoirdupois); 1 ounce is equal to 437.5 grains or 28.349 gramsAbbreviation: oz
2. a unit of weight equal to one twelfth of a Troy or Apothecaries’ pound; 1 ounce is equal to 480 grains or 31.103 grams
3. short for fluid ounce
4. a small portion or amount

noun

1. another name for snow leopard

n.1unit of weight, early 14c., from Old French once, unce, a measure of weight or time (12c.), from Latin uncia “one-twelfth part” (of a pound, foot, etc.), from Latin unus “one” (see one). The Latin word had been adopted in Old English as ynce (see inch). It was one-twelfth of a pound in the Troy system of weights, but one-sixteenth in avoirdupois. Abbreviation oz. is from older Italian onza. Also used in Middle English as a measure of time (7.5 seconds) and length (about 3 inches). n.2“wildcat,” c.1300, from Old French once “lynx” (13c.), from lonce, with l- mistaken as definite article, from Vulgar Latin *luncea, from Latin lyncea “lynx-like,” from lynx (see lynx). Originally the common lynx, later extended to other wildcats, now mainly used of the mountain-panther or snow leopard of Asia. n.

1. A unit of weight in the US Customary System, an avoirdupois unit equal to 437.5 grains or 28.35 grams.
2. A unit of apothecary weight equal to 480 grains or 31.10 grams.
3. A fluid ounce.

1. A unit of weight in the US Customary System equal to 116 of a pound or 437.5 grains (28.35 grams). See Table at measurement.
2. See fluid ounce.

In addition to the idiom beginning with ounce

ounce of prevention is worth a pound of cure, an

also see:

more bang for the buck (bounce for the ounce)