pier

Short definition from Wiktionary

Noun

1. 1
   A raised platform built from the shore out over water, supported on piles; used to secure, or provide access to shipping; a jetty.
2. 2
   A similar structure, especially at a seaside resort, used to provide entertainment.
3. 3
   A structure supporting the junction between two spans of a bridge.
4. 4
   A rectangular pillar, or similar structure, that supports an arch, wall or roof, or the hinges of a gate.