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sill

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Sill
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sill

  [sil]
Use sill in a Sentence
–noun
1. a horizontal timber, block, or the like serving as a foundation of a wall, house, etc.
2. the horizontal piece or member beneath a window, door, or other opening.
3. Geology. a tabular body of intrusive igneous rock, ordinarily between beds of sedimentary rocks or layers of volcanic ejecta.
Origin:
bef. 900; ME sille, OE syl, sylle; c. LG süll, ON syll; akin to G Schwelle sill

Related forms:
sill-like, adjective
Sill
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Sill

  [sil]
–noun
Mount, a mountain in E central California, in the Sierra Nevada Mountains. 14,153 ft. (4314 m).
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To sill
sill   (sĭl)   
n.  

  1. The horizontal member that bears the upright portion of a frame, especially the horizontal member that forms the base of a window.

  2. Geology An approximately horizontal sheet of igneous rock intruded between older rock beds.


[Middle English sille, from Old English syll, threshold.]
Sill   (sĭl)   
A peak, 4,316.7 m (14,153 ft) high, in the Sierra Nevada range of east-central California.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

sill 
O.E. syll "beam, large timber serving as a foundation of a wall," from P.Gmc. *suljo (cf. O.N. svill "framework of a building," M.L.G. sull, O.H.G. swelli, Ger. Schwelle "sill"), perhaps from PIE base *swel- "post, board" (cf. Gk. selma "beam"). Meaning "lower horizontal part of a window opening" is recorded from 1428.
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
sill   (sĭl)  Pronunciation Key 
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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