To cover or furnish with a roof.
To traverse buildings by walking or climbing across their roofs.
To put into prison, to bird.
To shelter as if under a roof.
The external covering at the top of a building.
The top external level of a building.
The upper part of a cavity.
An overhanging rock wall.
The surface or bed of rock immediately overlying a bed of coal or a flat vein.
To cover with tiles or stones, as a mosaic; to tile.
To completely fill (an area) when multiple copies of one or more two-dimensional shapes are placed edge to edge.
Of a two-dimensional shape, such that multiple copies of itself placed edge to edge cover an area leaving no space between the shapes.