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sill

Pronunciation: /sɪl/
(also chiefly Building cill)
Translate sill | into French | into German | into Italian | into Spanish
Definition of sill

noun

  • a shelf or slab of stone, wood, or metal at the foot of a window opening or doorway.
  • a strong horizontal beam forming a base in the frame of a timber-framed building.
  • each of the lower horizontal members of the frame of a cart or motor or rail vehicle.
  • Geology a tabular sheet of igneous rock intruded between and parallel with the existing strata. Compare with dyke2.
  • an underwater ridge or rock ledge extending across the bed of a body of water.

Origin:

Old English syll, sylle 'horizontal beam forming a foundation', of Germanic origin; related to German Schwelle 'threshold'

sill in other Oxford dictionaries

Definition of sill in the US English dictionary

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