windowsill

noun

win·​dow·​sill ˈwin-dō-ˌsil 

-də-

: the horizontal member at the bottom of a window opening

Examples of windowsill in a Sentence

Recent Examples on the Web

Smoke and soot sediment were ubiquitous, with soot often piling up on cars and windowsills. — Rebecca Florsheim, STAT, 17 July 2026

Having herbs readily available in your garden or on your windowsill eliminates the need to visit the store for fresh herbs. — Erica Browne Grivas, Better Homes & Gardens, 16 July 2026

Create a Windowsill Garden One of the most fun and creative ways to use old plastic containers is by building a windowsill garden. — Lauren Jarvis-Gibson, The Spruce, 10 July 2026

The prosecutors pointed out photos on the windowsill and near King’s desk, and Rogers identified two of the photos as being of Karen Charles, the former office manager. — Lillie Davidson, Fort Worth Star-Telegram, 26 June 2026

Word History

First Known Use

1703, in the meaning defined above

Kids Definition

windowsill

noun

win·​dow·​sill -ˌsil 

: the horizontal piece at the bottom of a window