What is Brief Out Of The Chancery?

Legal Definition
In Scotch law. A writ issued in the name of the sovereign in the election of tutors to minore, the cognoscing of lunatics or of idiots, and the ascertaining the widow's terce; andsometimes in dividing the property belonging to heirs-portioners. In these cases only brieves are now in use. Bell.
-- Black's Law Dictionary