pier

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 that projects tangentially from the shoreline to accommodate ships; often double-sided.
4. 4.A structure supporting the junction between two spans of a bridge.
5. 5.A rectangular pillar, or similar structure, that supports an arch, wall or roof, or the hinges of a gate.