\ ˈsil How to pronounce sill (audio) \

Definition of sill

1 : a horizontal piece (such as a timber) that forms the lowest member or one of the lowest members of a framework or supporting structure: such as
a : the horizontal member at the base of a window
b : the threshold of a door
2 : a tabular body of igneous rock injected while molten between sedimentary or volcanic beds or along foliation planes of metamorphic rocks
3 : a submerged ridge at relatively shallow depth separating the basins of two bodies of water

Examples of sill in a Sentence

Recent Examples on the Web For parking, however, Lamborghini believed the scissors doors aided in rearward visibility so a driver could lean their head out and rest on the sill while feathering the clutch. Clifford Atiyeh, Car and Driver, 19 Apr. 2022 Passenger aircraft with a door sill over six feet above the ground must be equipped with a slide, and long-range jets generally carry slides with integrated life-rafts. Howard Slutsken, CNN, 28 Mar. 2022 Seal any holes around the piping in interior or exterior walls and the sill plates, where your home rests on its foundation. Jessica Bennett, Better Homes & Gardens, 3 Dec. 2021 Inspect the sill plate, (the wood between the foundation wall and the floor members) for rot and insect damage. oregonlive, 10 Jan. 2022 The company’s Eunyoung Choi sill serve as producer and Abel Gongora as director on the series. Borys Kit, The Hollywood Reporter, 7 Jan. 2022 Interior shiny metals are smoked just like the exterior chrome, although there seems to be some randomness to which pieces go dark and which—like the sill plates in our sample car—remain bright. Elana Scherr, Car and Driver, 10 Dec. 2021 Know Thyself, while the name Inception is engraved on the number plaque on the driver’s side door sill. Robert Ross, Robb Report, 6 Dec. 2021 His own committee sill seeks answers how to mitigate the global issue. Walter Loeb, Forbes, 4 Nov. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sill.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sill

before the 12th century, in the meaning defined at sense 1

History and Etymology for sill

Middle English sille, from Old English syll; akin to Old High German swelli beam, threshold

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Time Traveler for sill

Time Traveler

The first known use of sill was before the 12th century

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Dictionary Entries Near sill

silky wisteria



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Last Updated

23 May 2022

Cite this Entry

“Sill.” Dictionary, Merriam-Webster, Accessed 25 May. 2022.

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More Definitions for sill


\ ˈsil How to pronounce sill (audio) \

Kids Definition of sill

1 : a heavy horizontal piece (as of wood) that forms the bottom part of a window frame or a doorway
2 : a horizontal supporting piece at the base of a structure


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