Sill Definition
A horizontal, structural member of a building near ground level on a foundation or pilings or lying on the ground in earth-fast construction and bearing the upright portion of a frame. Also spelled cill. Also called a ground plate, groundsill, sole, sole-plate, mudsill. An interrupted sill fits between posts instead of being below and supporting the posts in timber framing.
(UK) A young herring.
Other Word Forms of Sill
Noun
Origin of Sill
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From Middle English sille, selle, sülle, from Old English syll, syl (“sill, threshold, foundation, base, basis"), from Proto-Germanic *sulÄ« (“bar, sill"), from Proto-Indo-European *sel-, *swel- (“beam, board, frame, threshold"). Cognate with Scots sil, sill (“balk, beam, floor, sill"), Dutch zul (“sill"), Low German Sull, Sülle (“threshold, ramp, sill"), Danish syld (“base of a framework building"), Swedish syll (“joist, cross-tie"), Norwegian syll, Icelandic syll, sylla (“sill"). Related also to German Schwelle (> Danish svelle), Old Norse svill, Latin silva (“wood, forest").
From Wiktionary
Middle English sille from Old English syll threshold
From American Heritage Dictionary of the English Language, 5th Edition
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Compare thill.
From Wiktionary
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Compare sile.
From Wiktionary
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