Thirlage
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In Scotch law
A servitude by which lands are astricted or "thirled" to a particular mill, to which the possessors must carry the grain of the growth of the astricted lands to be ground, for the payment of such duties as are either expressed or implied in the constitution of the right Ersk. Inst 2, 9, 18.