megaron
The rectangular great hall in a Mycenaean building, usually supported with pillars.
historical
The megara faced north (“notebook north” equals true northeast) in the first court behind the archaic East Gate, similar in layout to their predecessors Megara 1 and 2 in the pre-Kimmerian East Court. Megaron C had gone through a period of use and a complete reconstruction before the Painted House was built.
Where it comes from
Learned borrowing from Ancient Greek μέγαρον (mégaron).
Adapted from the Wiktionary entry megaron (CC BY-SA 4.0).