sill

sill

noun \ˈsil\

Definition of SILL

1

: a horizontal piece (as a timber) that forms the lowest member or one of the lowest members of a framework or supporting structure: as a : the horizontal member at the base of a window b : 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

Origin of SILL

Middle English sille, from Old English syll; akin to Old High German swelli beam, threshold

First Known Use: before 12th century

Other Building Terms

batten, cistern, hearth, lath, transom, wainscot

Rhymes with SILL

bill, brill, chill, dill, drill, fill, frill, gill, grill, grille, hill, ill, kill, krill, mil, mill, mille, nil, nill, Phil, pill, prill, quill, rill, shill, shrill, skill, spill, squill, still, swill, thill, thrill, til, till, trill, twill, vill, will