Poustie
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
or POISTEE (Scotch).
In Scotch law
Power. 1 Pitc. Grim. Tr. pt. 1, p. 162.
See "Liege Poustie." A word formed from the Latin potestas.