WordWeb Online

1. [archaic] A temporary police force
   - posse comitatus
    
2. [informal] A band of people associated temporarily in some activity
   "they organized a posse to search for food";
   - party, company

Derived forms: posses

Type of: band, Bill [Brit, informal], boys in blue [informal], circle, constabulary, fuzz [informal], law, lot, Old Bill [Brit, informal], police, police force, polis [UK, dialect, informal], set, the fuzz [informal]

Encyclopedia: Posse, Goiás