definition of
pier

[1] #1 pier n. [wharf, wharfage, dock] a platform built out from the shore into the water and supported by piles; provides access to ships and boats. wn

[2] #2 pier n. (architecture) a vertical supporting structure (as a portion of wall between two doors or windows). wn

[3] #3 pier n. a support for two adjacent bridge spans. wn