from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Avoirdupois weight.
- n. Informal Weight or heaviness, especially of a person.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The official system of weights used in UK between 1856 and 1963. It had been the customary system in London since 1300 CE.
- n. The official system of weights used in USA between 1866 and 1959.
- n. Weight; heaviness.
from the GNU version of the Collaborative International Dictionary of English
- Goods sold by weight.
- Avoirdupois weight.
- Weight; heaviness.
from The Century Dictionary and Cyclopedia
- n. A system of weight in which one pound contains 16 ounces.
- n. The weight of anything according to the avoirdupois system: as, his avoirdupois was 150 pounds.
- n. Also written averdupois, and often abbreviated to avoir. and avdp.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a system of weights based on the 16-ounce pound (or 7,000 grains)
- n. excess bodily weight
Middle English avoir de pois, commodities sold by weight, alteration of Old French aveir de peis, goods of weight : aveir, avoir, to have (from Latin habēre; see able) + de, of (from Latin dē, from; see de-) + peis, pois, weight (from Vulgar Latin *pēsum, from Latin pēnsum, past participle of pendere, to hang.(American Heritage® Dictionary of the English Language, Fourth Edition)
Old French avoir + de + pois ("good of weight"), compare Modern French poids ("weight") (Wiktionary)