window sill

UK/ˈwɪndəʊ ˌsɪl/UK/ˈwɪndə ˌsɪl/US/ˈwɪndoʊ ˌsɪl/

A form of windowsill — The horizontal member protruding from the base of a window frame.

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Meanings

nounwindow sill (plural window sills)

plural window sills

  1. alternativeAlternative spelling of windowsill.
Cite this entry
APA

window sill. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/window%20sill

MLA

“window sill.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/window%20sill. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “window sill,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/window%20sill.

Source: window sill on Wiktionary, CC BY-SA 4.0.