Constable, in the United States, a police officer in a rural community. (In Great Britain and certain other English-speaking countries, a constable is any police officer of the lowest rank.) A constable's main job is to carry out court orders. He may also make arrests, but that duty has largely been taken over by sheriff's police or state police.
The name constable comes from the Latin title comes stabuli, meaning "count of the stable," a member of the ruler's household. During the Middle Ages in England and France a constable was the chief officer of the household, court, administration, or military forces of a ruler. The name was also applied to the governor of a fortress or to a county tax collector. The use of the title for police officers dates from the 16th century.