What is Barmote Courts?

Legal Definition
Courts held in certain mining districts belonging to the Duchy of Lancaster, for regulation of the mines, and for deciding questions of title and other matters relating thereto. 3 Steph. Comm. 347, note b.
-- Black's Law Dictionary
Legal Definition
Courts established in the reign of Edward III, and held twice a year in Derbyshire, in which matters connected with mining are considered.
-- Ballentine's Law Dictionary