(astronomy) A Chinese constellation located near Aquarius and Pegasus, one of the 28 lunar mansions and part of the larger Black Turtle.

(architecture) The external covering at the top of a building.

The top external level of a building.

The upper part of a cavity.

(mining) The surface or bed of rock immediately overlying a bed of coal or a flat vein.

(climbing) An overhanging rock wall.

(transitive) To cover or furnish with a roof.

To traverse buildings by walking or climbing across their roofs.

(transitive, slang) To put into prison, to bird.

(transitive) To shelter as if under a roof.