Plough Silver
Defined in 3 dictionaries — Cyclopedic (1922), Ballentine's (1916), Bouvier (1914)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
Money paid by tenants in composition of a duty to plough. PLUMBATURA (Lat. from plumbum, lead).
In the civil law. Soldering. Dig. 6. 1. 23. 5. PLUMBUM (Lat.)
In the civil law. Lead. Dig. 50. 16. 242. 2.
Ballentine's Law Dictionary
James A. Ballentine · 1916
Payment of money in lieu of ploughing service due from a tenant.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
Money formerly paid by some tenants in lieu of service to plough the lord’s land.