Definitions for posse comitatus
posse, posse comitatus(noun)
a temporary police force
The able-bodied men over 15 in a given county who can be summoned by the sheriff to help keep the peace, or arrest a felon; also a group of men so gathered.
Any band of men, especially armed or hostile.
Origin: From posse comitatus.
the power of the county, or the citizens who may be summoned by the sheriff to assist the authorities in suppressing a riot, or executing any legal precept which is forcibly opposed
a collection of people; a throng; a rabble
The Nuttall Encyclopedia
a Latin expression, signifies the whole coercive power of a county called out in the case of a riot, and embraces all males over 15 except peers, ecclesiastics, and infirm persons. These may be summoned by the sheriff to assist in maintaining the public peace, enforcing a writ, or capturing a felon; but usually the constabulary is sufficient for these duties.
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