A slightly elevated path for pedestrians over sandy or swampy ground, typically made out of wood; specifically (Canada, US) one running alongside a body of water or beach.
To install a boardwalk over.
A raised platform built from the shore out over water, supported on piles; used to secure, or provide access to shipping; a jetty.
A structure supporting the junction between two spans of a bridge.
A similar structure, especially at a seaside resort, used to provide entertainment.
A rectangular pillar, or similar structure, that supports an arch, wall or roof, or the hinges of a gate.