Word.ws English Dictionary

Plural of sill

regular plural

The plural of sill is sills.

Forms of sill

Singularsill /sɪl/
Pluralsills
Countablecountable

Sills in a sentence

  • The molten rock in the sills may have ignited vast reserves of shallowly buried natural gas, much like a match applied to a gas barbecue.2018, Tim Flannery, Europe: The First 100 Million Years, Penguin, published 2019, page 55
  • Door chowkats shall be with or without wooden sills as ordered.1963, Tarjit Singh, Practical Book on Sessional and Project Examinations, Specially for Civil Engineering Students. From the entry chowkat
  • There are two center and two side sills, all four being fish-belly girders.1905 June 20, “Railroad News. […]”, in The Topeka State Journal, last edition, Topeka, Kan., →ISSN, →OCLC, page 3, column 4. From the entry fish-belly girder
  • Small bodies of mafic to ultramafic rocks occur as boudins or sills up to 7 km long within the gneiss.1994, A. Thomas, Nicholas Culshaw, Kenneth L. Currie, Geological Survey of Canada, Geology of the Lac Ghyvelde-Lac Long Area, Labrador and…. From the entry boudin
  • Sills portrayed as a ditsy yet determined young woman, and Marie, the tomboylike heroine raised by a military regiment in Donizetti’s “Fille du Régiment.”2007 July 3, Anthony Tommasini, “Beverly Sills, All-American Diva, Is Dead at 78”, in New York Times. From the entry tomboylike

Meaning of sill

  1. noun A breast wall; window breast; horizontal brink which forms the base of a window.
  2. noun A threshold; horizontal structural member of a building near ground level on a foundation or pilings, or lying on the ground, and bearing the upright portion of a frame; a sill plate.
  3. noun A stratum of rock, especially an intrusive layer of igneous rock lying parallel to surrounding strata.

Full definition of sill

Questions about the plural of sill

What is the plural of sill?
The plural of sill is sills.
Is sill countable?
Sill is a countable noun.

Source and license

Adapted from Wiktionary: sill (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of sill.” Word.ws, https://word.ws/plural/sill. Based on Wiktionary, CC BY-SA 4.0.