The office, position, or jurisdiction of a constable; the system or authority of constables collectively.
From constable (from Old French conestable, originally 'count of the stable') + -ery (suffix denoting place, office, or system). The suffix -ery creates nouns describing institutions or collections.
Constablery shows how English adds -ery to professions to mean the whole system around them—like 'thievery' isn't one theft but the practice of thieving; constablery was the entire medieval police infrastructure.
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