Real burden
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In Scotch law
Where a right to lands is expressly granted under the burden of a specific sum, which is declared a burden on the lands themselves, or where the right is declared null if the sum be not paid, and where the amount of the sum, and the name of the creditor in it, can be discovered from the records, the burden is said to be real.
Bell.