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

Windows and Window Tracks After months of open windows, pollen, dirt, and other debris can accumulate along the tracks and windowsills. — Brigitt Earley, Martha Stewart, 4 Nov. 2026

Her gourd centerpiece accented her dining room, tiny orange pumpkins dotted a windowsill, and a single large waxy white pumpkin was perched in just the right spot on a sideboard. — Rebecca Jones, Southern Living, 21 Oct. 2026

The couple had previously seen a single owl on an apartment windowsill a few days earlier and were shocked even then, Williams recalled. — Joseph B. Frederick, Fortune, 15 Oct. 2026

Its inspiration comes from a fly on a windowsill that Brickell focused on and anthropomorphized to represent the idea that all living creatures matter. — Selena Fragassi, SPIN, 28 Sep. 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