Defn: An owl. [Obs.] Chaucer.
OULACHAN
Ou"la*chan, n. (Zoöl.)
Defn: Same as Eulachon.
OUNCE Ounce, n. Etym: [F. once, fr. L. uncia a twelfth, the twelfth part of a pound or of a foot: cf. Gr. Inch, Oke.]
1. A weight, the sixteenth part of a pound avoirdupois, and containing 437
2. (Troy Weight)
Defn: The twelfth part of a troy pound.
Note: The troy ounce contains twenty pennyweights, each of twenty- four grains, or, in all, 480 grains, and is the twelfth part of the troy pound. The troy ounce is also a weight in apothecaries' weight. [Troy ounce is sometimes written as one word, troyounce.]
3. Fig.: A small portion; a bit. [Obs.] By ounces hung his locks that he had. Chaucer. Fluid ounce. See under Fluid, n.
OUNCE
Ounce, n. Etym: [F. once; cf. It. lonza, Sp. onza; prob. for lonce,
taken as l'once, fr. L. lynx, Gr. lyncea, from lynx. Cf. Lynx.]
(Zoöl.)