Originally, a set of rooms at an Inn of Court used by one or more barristers as an office and residence; now, the office of one or more barristers in any building.
In full king's chambers: parts of the sea next to the coast of England and Wales delimited by imaginary lines connecting headlands, over which the Crown asserted exclusive jurisdiction; these have now been superseded by the concept of the territorial sea.
Chiefly in in chambers: a judge's private office which is used for hearings that do not need to be held in open court.
An apartment or suite found on an upper floor, or floors, of a tall building, especially one that is expensive or luxurious with panoramic views. Sometimes these are located just under "penthouse mechanical" floors.
Any of the sloping roofs at the side of a real tennis court.
An outhouse or other structure (especially one with a sloping roof) attached to the outside wall of a building, sometimes as protection from the weather.
To provide with a penthouse, shelter by means of a shed sloping from a wall, or anything similar.