windowsill

or win·dow sill

[ win-doh-sil ]

noun

1. the sill under a window.

windowsill

/ ˈwɪndəʊˌsɪl /

noun

1. a sill below a window

Word History and Origins

Origin of windowsill¹

First recorded in 1695–1705; window + sill

Example Sentences

Three months later, they were spotted on a windowsill in the winter by ecologist Daisy Cadet and her mother Ashleigh in what scientists have described as an "improbable event" that "defies rational explanation".

From BBC

“The glass itself possesses a water-like quality,” she said, adding that she likes to keep the vases on a windowsill, where sunlight passes through and casts shadows that “dance and shift like ripples.”

From Seattle Times

On her windowsill, Al Holden, her son, smiles in a baby portrait, all chubby cheeks and tiny fists.

From New York Times

To test this hypothesis, they simply opened their lab windows to observe the Larinioides sclopetarius, or bridge spiders, that call the windowsills home.

From Science Daily

Meanwhile, my mom eyed the cat suspiciously as he leaped up to the windowsill.

From Literature