n. (Arch.) (a) Any detached mass of masonry, whether insulated or supporting one side of an arch or lintel, as of a bridge; the piece of wall between two openings. A structure extending from the solid land out into the water of a river, lake, harbor, etc., to afford convenient passage for persons and property to and from vessels along its sides. (b) Any additional or auxiliary mass of masonry used to stiffen a wall. See Buttress. A projecting wharf or landing place. Abutment pier, the pier of a bridge next the shore; a pier which by its strength and stability resists the thrust of an arch. A heavy, vertical support member, of masonry, wood, or metal.
- Pier glass, a mirror, of high and narrow shape, to be put up between windows.
- Pier table, a table made to stand between windows.