walking quorum
n.— «“Walking” quorums, often called “roaming” quorums, are those times when members of a government body—a city council or school board, for instance—discuss public business outside of public meetings. It’s often in groups fewer than that number needed for an official meeting.» —“Editorial: Ending ’walking quorums'” West Branch Times Online (Iowa) Feb. 20, 2008. (source: Double-Tongued Dictionary)