This verb means to remove a roof or covering, to uncover from above. Classical sources use it for uncovering dense streams, unroofing temples, or opening sealed chambers. Mark's Gospel employs it in the memorable scene where four men, unable to reach Jesus through the crowd, literally dig through and remove the roof tiles above him to lower their paralyzed friend down. It's a verb of determined, even desperate access—removing the barrier from above when ground-level entry proves impossible.