Troy-Weight, is that mode of weighing certain commodities, in which the pound contains ounces, each of them being divided into twenty penny-weights, and the latter into twenty-four grains each: on the contrary, a pound of avoirdupois consists of sixteen ounces ; so that each oz. has eight drams, or drachms ; each dram, three scruples ; and each scruple, twenty grains. - See also Avoirdupois and Weight.