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[silz] /sɪlz/
Beverly (Belle Silverman"Bubbles") 1929–2007, U.S. coloratura soprano and opera administrator.


[sil] /sɪl/
a horizontal timber, block, or the like serving as a foundation of a wall, house, etc.
the horizontal piece or member beneath a window, door, or other opening.
Geology. a tabular body of intrusive igneous rock, ordinarily between beds of sedimentary rocks or layers of volcanic ejecta.
Origin of sill
before 900; Middle English sille, Old English syl, sylle; cognate with Low German süll, Old Norse syll; akin to German Schwelle sill
Related forms
sill-like, adjective
undersill, noun


[sil] /sɪl/
Mount, a mountain in E central California, in the Sierra Nevada Mountains. 14,153 feet (4314 meters). Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for Sills
Historical Examples
  • Some of the people had edged to the walls as if to listen, and a few had clambered to the Sills as if to see.

    The Manxman Hall Caine
  • Indeed, a legend runs that these Sills were not laid by men at all, but by the Dwarfs.

    Dwellers in the Hills Melville Davisson Post
  • It is used at the corners of Sills and plates, also sometimes in chair-seats.

    Handwork in Wood

    William Noyes
  • On those were laid the Sills, and before noon the building was up and half covered.

    Field and Forest Oliver Optic
  • The only external alteration he had made had been the lowering of the Sills of the windows.

    The Wonder J. D. Beresford
  • The houses are built of brick with foundations and Sills of Soignies stone.

    France and the Republic William Henry Hurlbert
  • On looking at his face I discovered that he was my messmate Sills.

  • I could not manage to make companions of my messmates Sills and Broom.

  • Sills, I believe, wished to be honest, but he had no discretion.

  • The largest, straightest, and best logs should be saved for Sills or foundations.

British Dictionary definitions for Sills


Beverley, original name Belle Silverman. 1929–2007, US soprano: director of the New York City Opera (1979–89)


a shelf at the bottom of a window inside a room
a horizontal piece along the outside lower member of a window, that throws water clear of the wall below
the lower horizontal member of a window or door frame
a continuous horizontal member placed on top of a foundation wall in order to carry a timber framework
a flat usually horizontal mass of igneous rock, situated between two layers of older sedimentary rock, that was formed by an intrusion of magma
Word Origin
Old English syll; related to Old Norse svill sill, Icelandic svoli tree trunk, Old High German swella sill, Latin solum ground
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
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Word Origin and History for Sills



Old English syll "beam, threshold, large timber serving as a foundation of a wall," from Proto-Germanic *suljo (cf. Old Norse svill, Swedish syll, Danish syld "framework of a building," Middle Low German sull, Old High German swelli, German Schwelle "sill"), perhaps from PIE root *swel- (3) "post, board" (cf. Greek selma "beam"). Meaning "lower horizontal part of a window opening" is recorded from early 15c.

Online Etymology Dictionary, © 2010 Douglas Harper
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Sills in Science
A sheet of igneous rock intruded between layers of older rock. See illustration at batholith.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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