v. Roof roof
Matt 10:27; Luk 12:3 ye hear .. proclaim it from the a
Matt 24:17; Mar 13:15; Luk 17:31 whoever is in the a, let him not go down
Act 10:9 Peter went up to the a to pray, near
Upper part of the house, above the roof. Houses in Israel were generally flat-roofed. It was accessed by a ladder. It was mandatory to put a parapet to the a. to prevent someone from falling from it. The A. it was used as a place of rest (2Sa 11:2), prayer or to examine the surroundings. Pedro got on an a. to pray (Acts 10:9). The expressions of the Lord Jesus about proclaiming everything from a. they refer to the fact that nothing can be covered up but will be made public knowledge (Mat 10:27; Luc 12:3).
Source: Christian Bible Dictionary
doma (dw`ma, 1430), a word related to demo, to build, denotes the upper part of a house. The upper part of the houses was flat, and protected by a low wall that surrounded it as a parapet (see Deu 22:8). It was much frequented, and was used for various purposes, eg, for proclamations (Mat 10:27; Luk 12:3); for prayer (Acts 10:9). The house was often built around a courtyard, and ropes were attached to its top from the parapet walls to support a cover against the heat. The top of the house could be reached by stairs outside the building; the paralytic in Luk 5:19 may have been lowered into the courtyard by rolling over the covering. It is commanded in Mat 24:17; Mark 13.15; Luk 17:31 flee from the housetop in time of danger. The KJV translates “rooftop” in all passages except Luk 5:19 “roof”. The KJV translates as “terrace”, except in Luk 5:19 “above the house”; Act 10:9 “rooftop”. See ROOF.¶
Source: Vine New Testament Dictionary