A constable is an elected official directed by the Justice of the Peace to deliver and return legal notices/documents.
Merriam-Webster Online Dictionary
constable (noun)1.
a high officer of a royal court or noble household especially in the Middle Ages
2.
the warden or governor of a royal castle or a fortified town
3.
a) a public officer usually of a town or township responsible for keeping the peace and for minor judicial duties
b) chiefly British - police officer , especially one ranking below sergeant
John 1776–1837 Eng. painter
Merriam-Webster Online Thesaurus
constable (noun)a member of a force charged with law enforcement at the local level
SYNONYMS:
bobby, bull, constable, cop, copper, flatfoot, fuzz, gendarme, lawman, policeman, police officer, shamusRELATED WORDS:
patrolman, policewoman; detective, dick, gumshoe, hawkshaw, inspector, investigator, plainclothesman, sherlock, sleuth, sleuthhound; marshal ( marshall), sheriff, trooper; peace officer; captain, lieutenant, sergeant; constabulary, heat [], man, police, police force; operative, private detective, private eye, private investigatorNEAR ANTONYMS:
civilian