Capitalis Plegius
Defined in 3 dictionaries — Cyclopedic (1922), Ballentine's (1916), Black's (1891)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
A chief pledge; a head borough. Fleta, lib. 2, c. 52, & 5.
Ballentine's Law Dictionary
James A. Ballentine · 1916
Chief surety.
A Dictionary of Law
Henry Campbell Black · 1891
A chief pledge; a head borough. Townsh. Pl. 85.