Picket

A relay of guards in front of a factory or place of business of an employer for the purpose of watching who enters or leaves it, or the establishment and maintenance of an organized espionage upon the works and upon those going to and from them, 178 Mich. 305; it has also been defined as "a body of men belonging to a trade union sent to watch and annoy nonunion workers in a shop or against which a strike is in progress," but the word originally had no such meaning. 118 Mich. 497.