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, bur/boulder, new borf-holder, third-borrow, tything-man, chief pledge, and borrow-elder, according to the diversity of speech in different places. This office 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 manus, &c.

Head-Mould-shot, a disease in children, wherein the sutures of the skull, generally the coronal, ride; that is, have their edges shot one over another; and are so close locked together, as to compress the internal parts, the meninges, or even the brain itself. The disease usually occasions convulsions, and is supposed to admit of no cure from medicine, unless room could be given by manual operation or a division of the sutures.

The head-mould-shot is the disorder opposite to the horse-thoe head.