Strong's #508: anogeon (pronounced an-ogue'-eh-on)
from 507 and 1093; above the ground, i.e. (properly) the second floor of a building; used for a dome or a balcony on the upper story:--upper room.
Thayer's Greek Lexicon:
̓́
anōgēon
1) anything above the ground
2) a room in the upper part of a house
Part of Speech: noun neuter
Relation: from G507 and G1093
Usage:
This word is used 2 times:
Mark 14:15: "will show you a large upper room furnished and prepared: there make ready"
Luke 22:12: "shall show you a large upper room furnished: there make ready."