BT Tan 24a(28) : פש ליה חד זוזא, זב{י}ן ביה חיטי ועייליה לעיליתיה‏ : he had one zuz left; he bought some wheat with it and put it in his upper room
See the entire entry for ˁellī, ˁellīṯā n.f. upper story