HEAD-BOROW, or HEAD-BOROUGH, signifies the person who is the chief of the frank-pledge, and had anciently the principal direction of those within his own pledge. He was also called burrow-head, burshoulder, now borsholder, third-borow, tybing-man, chief-pledge, and borow-elder, according to the diversity of speech in different places. This office is now usually called a high-constable. The head-borow was the chief of ten pledges: the other nine were called hand-borow, or plegu manuales, &c.