a pile with a threaded tip that is screwed into the ground by a winch or capstan
screw pile in American English
noun
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
Derived forms
screw piling
Word origin
[1830–40]This word is first recorded in the period 1830–40. Other words that entered Englishat around the same time include: isomerism, isometric, orientation, showcase, walkover