The story
From Anglo-Norman/Law French clameur de haro.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: An ancient Norman legal procedure, still valid in the Channel Islands, in which any person can publicly recite a certain formula calling on the sovereign's aid and thereby create a form of injunction requiring certain conduct to cease until a court can determine its lawfulness. Full definition →
From Anglo-Norman/Law French clameur de haro.
Etymology from Wiktionary, CC BY-SA 4.0.