the.com/clubhouse

means A building or room set aside for a club's members to gather, relax, and use shared facilities.

from Simply 'club' plus 'house' — 'club' emerging in the 1600s from an earlier sense of a group 'clubbing together,' pooling money or effort for a shared purpose, like splitting a tavern bill. By the 1800s 'clubhouse' named the physical home of such a group — golf clubs and social clubs especially — and later stretched to sports locker rooms, treehouses, and eventually, briefly, an app that made a virtual room feel like the most exclusive one in town.