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.
A billet of wood; a piece of timber, a similar solid object or constructed unit used as a prop.
A young salmon.
To prop or sustain with a sprag.
To check the motion of, as a carriage on a steep slope, by putting a sprag between the spokes of the wheel.