What is An, Jour, Et Waste?

Legal Definition
In feudal law. Year, day, and waste. A forfeiture of the lands to the crown incurred by the felony of the tenant, after which time the land escheats to the lord. Termes de la Ley, 40.
-- Black's Law Dictionary
Legal Definition
See Year, day, and waste.
-- Bouviers Law Dictionary
Legal Definition
-- Ballentine's Law Dictionary