anything resembling a ceiling: a ceiling of leaves over the arbor.
An upper limitation, specially because set by regulation: wage and cost ceilings.
The highest altitude under specific climate conditions from which the bottom is still visible.
The height associated with the cheapest level of clouds.
Nautical The planking applied to the inside framework of a ship.
The surface that bounds the top of limit of a space.
The upper restriction of an object or action.
the greatest height of which an aircraft may fly.
the littlest integer higher than or corresponding to certain quantity.
The inside liner of a-room overhead; the under side of the flooring above; the upper surface contrary towards the flooring.
the liner or finishing of every wall surface or other area, with plaster, thin panels, etc.; also, the work when done.
The inner planking of a vessel.
A canopy; hangings; properly, hangings overhead, but by extension also side-hangings; tapestry.
the inside overhead area of a flat, frequently created of a lining of some kind attached into underneath side of joists giving support to the floor above, or even to rafters; the horizontal or curved area of an interior, opposite the ground. In ordinary modern-day buildings most commonly it is done with or formed of lath-and-plaster work.
The lining of planks within a ship's framework.
maximum altitude where an airplane can fly (under specific problems)
(meteorology) altitude of this lowest level of clouds