revivals
commitees
These were called committee meetings during the Constitutional Convention.
caucuses
There have been thousands of meetings.
Constitution meetings
Maybe in some churches. We have meetings either at peoples homes, the priests house, the school or the hall.
Public meetings are held in government settings. Meetings of Congress, statehouses, and cities all hold meetings open to the public.
In the triangle
tipi
In churches
Under Tony Blair, cabinet meetings were held most Thursdays of the year, in addition to a handful of emergency Cabinet meetings. It is not possible to determine exactly how many meetings were held, but we can safely assume that in Tony Blair's decade in power, approximately 500 meetings of the Cabinet - give or take roughly a dozen - were held, in addition to many more meetings of Cabinet committees.
Camp meetings or revivals.