Thwertnick
Defined in 2 dictionaries — Cyclopedic (1922), Black's (1910)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The custom of giving entertainments to a sheriff, etc., for three nights.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In old English law. The custom of giving entertainments to a sheriff, etc., for three nights.