a pile that is used for the foundations of bridges, lighthouses, etc., and has a screwlike lower end for drilling through and taking firm hold in compacted material.
a pile with a threaded tip that is screwed into the ground by a winch or capstan
noun 1. any tropical Asian tree or shrub of the genus Pandanus, having a palmlike or branched stem, long, narrow, rigid, spirally arranged leaves and aerial roots, and bearing an edible fruit. noun 1. any of various pandanaceous plants of the Old World tropical genus Pandanus, having a spiral mass of pineapple-like leaves and heavy […]
noun 1. a metal plate having threaded holes, used for cutting screw threads by hand.
noun 1. a device for applying pressure by the turning of a threaded shaft.
noun 1. a rotary propelling device, as for a ship or airplane, consisting of a number of blades that radiate from a central hub and are so inclined to the plane of rotation as to tend to drive a helical path through the substance in which they rotate. screw propeller noun 1. an early form […]