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pile cap

British  

noun

  1. a reinforced or mass concrete connecting beam cast around the head of a group of piles enabling it to act as a single unit to support the imposed load

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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He felt a tap on his shoulder, looked into a lean face under a pile cap with three stars and a paratrooper's silver badge on it.

From Time Magazine Archive