/meg"euh ron'/ , n. , pl. megara /-euhr euh/ , megarons . (in pre-Hellenic Greek architecture)
a building or semi-independent unit of a building, generally used as a living apartment and typically having a square or broadly rectangular principal chamber with a porch, often of columns in antis, and sometimes an antichamber or other small compartments.
[ 1875-80; mégaron (in Homer) the principal living quarters of a palace ]