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pneumatic pile

American  

noun

Building Trades.

  1. a hollow pile, used under water, in which a vacuum is induced so that air and water pressure force it into place.

Etymology

Origin of pneumatic pile

First recorded in 1855–60

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.