1) Ad hoc group of lawmen 2) Ad hoc group of yore 3) Ad hoc hunters 4) Ad hoc law group 5) Ad hoc lawmen 6) Ad hoc oater group 7) Armed band 8) Bad guy followers 9) Band after baddies 10) Band after bandits 11) Band of deputies 12) Bandit baggers 13) Bandit-chasing band 14) Bandit-hunting band 15) Bandit-seeking band 1) Aides 2) Armedband 3) Assemblage 4) Entourage 5) Gang 6) Group 7) Party 
[horse] Posse (15 May 1977–after 1991) was an American-bred, British-trained Thoroughbred racehorse and sire. He ran only six times, winning twice, in a racing career which lasted from October 1979 until July 1980. As a three-year-old he was promoted to second after a controversial race for the 2000 Guineas but showed his best form in sum...
• (n.) See Posse comitatus.
Pos'se noun See Posse comitatus . In posse . 
Posse is slang for close friends or a street gang.
archaic or obsolete terms > General: Having strength or power, being able.
[n] - a temporary police force
posse (posse comitatus) 1. In common law, posse comitatus (Latin for 'the power of the county') referred to the authority wielded by the county sheriff to conscript any able-bodied male over the age of fifteen to assist him in keeping the peace or to pursue and arrest a felon; compare hue and cry. It is the law enforcement equivalent of sum...
A group of people who have come together for a common purpose, such as a bunch of friends going skiing or snowboarding together. See also wolfpack.
posse comitatus noun a temporary police force