underpinning

[ uhn-der-pin-ing ]
/ ˈʌn dərˌpɪn ɪŋ /

noun

a system of supports beneath a wall or the like.
Often underpinnings. a foundation or basis: to uncover the emotional underpinnings of an illness.
underpinnings, Informal.
  1. underwear, especially women's underwear.
  2. the legs.

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Origin of underpinning

First recorded in 1480–90; under + pin + -ing1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for underpinning

British Dictionary definitions for underpinning

underpinning
/ (ˈʌndəˌpɪnɪŋ) /

noun

a structure of masonry, concrete, etc, placed beneath a wall to provide support
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