Sill

/sɪl/

Meaning & Definition

noun
A horizontal piece of timber, stone, or other material at the bottom of a window or door frame.
She placed the flowerpot on the windowsill to get more sunlight.
The bottom part or ledge of a window.
He leaned out of the window and rested his arms on the sill.
A threshold or barrier, as in a doorway.
The child jumped over the sill and ran into the garden.

Etymology

Middle English: from Old Norse 'sill' meaning 'plank, timber'.

Common Phrases and Expressions

window sill
The ledge beneath a window, typically for decoration or holding plants.
sill level
Refers to the height of the sill, often used in construction and design.

Related Words

threshold
The bottom part of a doorway; also, the entrance to a place.
lintel
A horizontal support across the top of a door or window.

Slang Meanings

A person who is overly cautious or timid.
Don’t be such a sill—go talk to her!
To act in a silly or foolish manner.
Stop being a sill and get serious!