TROY TROY-WEIGHT, noun The weight by which gold and silver, jewels, etc. are weighed. In this weight, 20 grains = a scruple, 3 scruples = a dram, 8 drams = an ounce, and 12 ounces = one pound.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI