HEAD-BORROW, or HEAD-BOROUGH, signifies the person who is the chief of the frank-pledge, and who had anciently the principal direction of those within his own pledge. He was also called burrow-head, burshoulder, now bors-holder, third-borrow, tything-man, chief-pledge, and borrow-elder, according to the diversity of speech in different places. This officer is now usually called a high-constable. The head-borrow was the chief of ten pledges; the other nine were called hand-borrows, or plegi manuales, and the like.