a flight of stairs or a ladder for lowering over the side of a ship for access to and from a small boat.
The property ladder, without the implication of necessarily owning the place where one lives.
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.