Definition of sill
1 : a horizontal piece (such as a timber) that forms the lowest member or one of the lowest members of a framework or supporting structure: such asa : the horizontal member at the base of a windowb : the threshold of a door
2 : a tabular body of igneous rock injected while molten between sedimentary or volcanic beds or along foliation planes of metamorphic rocks
3 : a submerged ridge at relatively shallow depth separating the basins of two bodies of water
Recent Examples of sill from the Web
Naked carbon fiber also adorns the front splitter, the rear spoiler, and the side sills.
Sills' office contributed a large portion of the reward.
Sills said investigators were trying to determine how the killers got out of the inmate cage and into the driver's compartment.
Sills urged the public to study the latest photos released of Rowe and Dubose, taking particular note of crown tattoos above Dubose's eyebrows.
Sills said both men were violent repeat offenders and are considered armed and dangerous.
The window trim, door handle trim, and side sill trim were the same satin chrome.
Added exterior design accents include European Schötten Fenster tilt-turn wood windows, chimney caps, cornerstones, extra-wide brick sills, and brick accents surrounding the base around the home and its corbels.
Across its sill, an altar had been fashioned with cedar boughs, smooth stones, eagle feathers, a small red candle and a tiny bell.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sill'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of sill
Middle English sille, from Old English syll; akin to Old High German swelli beam, threshold
First Known Use: before 12th centurySee Words from the same year
SILL Defined for English Language Learners
Definition of sill for English Language Learners
: the shelf at the bottom of a window frame
: a piece of wood, metal, or stone at the bottom of a doorframe
: the part of the frame of a car that is directly under its doors
SILL Defined for Kids
Definition of sill for Students
1 : a heavy horizontal piece (as of wood) that forms the bottom part of a window frame or a doorway
2 : a horizontal supporting piece at the base of a structure
Seen and Heard
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