Definition of troy noun from the Oxford Advanced Learner's Dictionary

 

troy

 noun
noun
BrE BrE//trɔɪ//
 
; NAmE NAmE//trɔɪ//
 
[uncountable]
 
jump to other results
a system for measuring precious metals and precious stones Word Origin late Middle English: from a weight used at the fair of Troyes, a town in northern France.
See the Oxford Advanced American Dictionary entry: troy