ceiling
ceil.ing \'se--lin\ \-lind\ n 1a: the overhead inside lining of a room 1b: material used to ceil a wall or roof of a room 2: something thought of as an overhanging shelter 3a: the height above the ground from which prominent objects on the ground can be seen and identified 3b: the height above the ground of the base of the lowest layer of clouds w hen over half of the sky is obscured 4a: ABSOLUTE CEILING 4b: SERVICE CEILING 5: an upper usu. prescribed limit - ceil.inged aj