Dictionary.com

sill

[ sil ]
/ sɪl /
Save This Word!

noun

a horizontal timber, block, or the like serving as a foundation of a wall, house, etc.
the horizontal piece or member beneath a window, door, or other opening.
Geology. a tabular body of intrusive igneous rock, ordinarily between beds of sedimentary rocks or layers of volcanic ejecta.

QUIZZES

QUIZ YOURSELF ON "WAS" VS. "WERE"!

Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of sill

before 900; Middle English sille,Old English syl, sylle; cognate with Low German süll,Old Norse syll; akin to German Schwelle sill

OTHER WORDS FROM sill

sill-like, adjectiveun·der·sill, noun

Definition for sill (2 of 2)

Sill
[ sil ]
/ sɪl /

noun

Mount, a mountain in E central California, in the Sierra Nevada Mountains. 14,153 feet (4,314 meters).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for sill

British Dictionary definitions for sill

sill
/ (sɪl) /

noun

a shelf at the bottom of a window inside a room
a horizontal piece along the outside lower member of a window, that throws water clear of the wall below
the lower horizontal member of a window or door frame
a continuous horizontal member placed on top of a foundation wall in order to carry a timber framework
a flat usually horizontal mass of igneous rock, situated between two layers of older sedimentary rock, that was formed by an intrusion of magma

Word Origin for sill

Old English syll; related to Old Norse svill sill, Icelandic svoli tree trunk, Old High German swella sill, Latin solum ground
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for sill

sill
[ sĭl ]

A sheet of igneous rock intruded between layers of older rock. See illustration at batholith.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK