SERGEANT-AT-ARMS, or Mace, an officer appointed to attend the person of the king, to arrest traitors and such persons of quality as offend, and to attend the lord high steward when sitting in judgment on a traitor.
There are four other sergeants-at-arms, created in the same manner; one, who attends the lord chancellor; a second, the lord treasurer; a third, the speaker of the House of Commons; and a fourth, the lord mayor of London on solemn occasions.