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Definition sill

Etymology 1

From Middle English sille, selle, s�lle, from Old English syll, syl (�sill, threshold, foundation, base, basis�), from Proto-Germanic *sul? (�bar, sill�), from Proto-Indo-European *sel-, *swel- (�beam, board, frame, threshold�). Cognate with Scots sil, sill (�balk, beam, floor, sill�), Dutch zulle (�sill�), Low German Sull, S�lle (�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�), Ancient Greek ??? (h�l?).

Noun

sill (plural sills)

1. (architecture) (also window sill) A horizontal slat which forms the base of a window.
2. (construction) 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 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.
3. (geology) A horizontal layer of igneous rock between older rock beds.
4. A piece of timber across the bottom of a canal lock for the gates to shut against.
5. (anatomy) A raised area at the base of the nasal aperture in the skull.
6. (military, historical) The inner edge of the bottom of an embrasure.

Etymology 2

Compare sile.

Noun

sill (plural sills)

1. (Britain) A young herring.

Etymology 3

Compare thill.

Noun

sill (plural sills)

1. The shaft or thill of a carriage.

Results 224 Words with the letters SILL

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