1. in posse : 可能地；
1. 一群；一队；一批
A posse of people is a group of people with the same job or purpose.
2. （旧时美国县治安官调集协助其追捕罪犯的）民防团
In former times, in the United States, a posse was a group of men who were brought together by the local law officer to help him chase and capture a criminal.
1. a temporary police force
Synonym: posse comitatus