Historically, general warrant was issued by the English Secretary of State for the arrest of the author, printer, or publisher of a seditious libel, without naming the persons to be arrested. Such warrants were banned by Parliament in 1766.
A general warrant refers to a warrant providing a law-enforcement officer with broad discretion or authority to search and seize unspecified places or persons. A general warrant lacks a sufficiently particularized description of the person or thing to be seized or the place to be searched. General warrants are unconstitutional because they do not meet the Fourth Amendment's specificity requirements.