An example of a pier is a dock for tying up boats.
- A pillar, generally rectangular in cross section, supporting an arch or roof.
- The portion of a wall between windows, doors, or other openings.
- A reinforcing structure that projects from a wall; a buttress.
Origin of pier
- Middle English per bridge support partly from Norman French pere, piere (from Old French puiere a support) (from puie) (from puier to support) (from Vulgar Latin podiāre) (from Latin podium platform podium) and partly from Medieval Latin pera (from Old North French pire, piere breakwater) (possibly from Latin petra rock) (from Greek petrā per-2 in Indo-European roots)
From American Heritage Dictionary of the English Language, 5th Edition