Meaning

noun a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains

noun an ancient city in Asia Minor that was the site of the Trojan War

originFrom Middle English troye, from Anglo-Norman. According to the American Heritage Dictionary, probably first used at a fair in Troyes, France.

Etymology from Wiktionary, CC BY-SA 3.0