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

Shanda, who had dark hair and eyes and a gentle demeanor, kept windowsills filled with plants. — Paige Williams, New Yorker, 22 June 2026

Place an absorbent towel on the windowsill to catch any moisture or water drips. — Caroline Lubinsky, Martha Stewart, 11 June 2026

Place your celery base-first in a shallow container with about an inch of water in a sunny windowsill to trigger growth. — Asia London Palomba, The Spruce, 31 May 2026

This handheld vacuum has a compact design that’s easy to grab in a pinch to clean off furniture, car seats, windowsills, and more. — Clara McMahon, PEOPLE, 22 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