pier /ˈpɪr/
  碼頭,橋墩,防波堤
  Pier n.
  1. 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. (b) Any additional or auxiliary mass of masonry used to stiffen a wall. See Buttress.
  2. 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.
  Pier glass, a mirror, of high and narrow shape, to be put up between windows.
  Pier table, a table made to stand between windows.
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  pier
       n 1: a platform built out from the shore into the water and
            supported by piles; provides access to ships and boats
            [syn: wharf, wharfage, dock]
       2: (architecture) a vertical supporting structure (as a portion
          of wall between two doors or windows)
       3: a support for two adjacent bridge spans