Definition of Sill
Sill
sill
Definition/Meaning
(noun)
a horizontal piece of some material such as wood or stone that forms the base of a window or doorway, either as a shelf or simply as a slab;
e.g. There was a potted plant on the sill of the window.
(noun)
a sheet or body of igneous rock that forms a 'table' between existing layers of different kinds of rock;
e.g. The rock cracked along the sill and split into two pieces.
(noun)
a ledge or ridge of rock that is located underwater, sometimes separating the basins of two separate water bodies;
e.g. The sill between the sea and ocean is visible on ocean maps.
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