(Also "Scots troy weight") a system of weights formerly used in Scotland, chiefly for precious metals and stones; chiefly attributive and as postpositive, designating weights of this system.
Origin
Late 17th century.
Definition of Scots troy in US English:
Scots troy
noun
rare, historical
(Also "Scots troy weight") a system of weights formerly used in Scotland, chiefly for precious metals and stones; chiefly attributive and as postpositive, designating weights of this system.