- a heavy structure supporting the spans of a bridge, esp. (as distinguished from an abutment), one supporting the adjacent ends of two center spans of a long bridge
- a structure built out over the water and supported by pillars or piles: used as a landing place, pleasure pavilion, etc.
- a heavy column, usually square, used to support weight, as at the end of an arch
- the part of a wall between windows or other openings
- a reinforcing part built out from the surface of a wall
Origin of pierMiddle English per from Medieval Latin pera, ultimately from uncertain or unknown; perhaps or akin to Classical Latin petra, stone from Gr, rock