τρίστεγον G5152
trístegon · tris'-teg-on · Adjective
neuter of a compound of τρεῖς and στέγη as noun; a third roof (story):--third loft.
1 Occurrence in the King James Bible
Acts 20:9And there sat in a window a certain young man named Eutychus, being fallen into a deep sleep: and as Paul was long preaching, he sunk down with sleep, and fell down from the third loft, and was taken up dead.