(chiefly Internet slang) An intimidatingly large block of writing, particularly one with few or no paragraph breaks.

(roofing) a nonstructural wall erected around units or curbs on a roof. Typically the framing consists of girts with a wood or metal covering attached to the frame.

Rare spelling of cell wall.

(skateboarding, snowboard, BMX) A trick where the rider makes the bottom of the board touch the side of a wall.

Any interface through which there is no transfer of heat or entropy

(medicine) The set of tissues that bound the thoracic cavity, including the rib cage, fascia, muscles etc.

(usually in the plural) A wall around a city, built to define the city's boundaries, and sometimes to protect it from aggressors.

A green wall, a wall covered by greenery.

(mining) The wall under a vein; the footwall.

(geology) The section of rock that extends above a diagonal fault line (the corresponding lower section being the footwall).