'House top' in the Bible

Let not him that is on the house-top,

And let not him that is on the house-top go down into the house, neither enter in, to take any thing out of his house.

In that day, he that shall be on the house-top and his goods in the house, let him not go down to take them away: and he that is in the field, let him likewise not return back.

On the morrow, as they journeyed and drew nigh to the city, Peter went up on the house-top, to pray, about the sixth hour.