The meaning of SILL is a horizontal piece (such as a timber) that forms the lowest member or one of the lowest members of a framework or supporting structure.

sill, flat intrusion of igneous rock that forms between preexisting layers of rock. Sills occur in parallel to the bedding of the other rocks that enclose them, and, though they may have …

In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock. …

In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock. …

In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock. A sill …

The large windows in the sharply angled bedrooms include large sills with built-in cabinets underneath.

A sill is a sheet intrusion emplaced parallel to the structures present within its host rocks. Its primary feature is to be concordant and never crosscut, indeed, the foliation or bedding planes …

Oct 31, 2025 · Noun sill (plural sills) (architecture, also "window sill") A breast wall; window breast; horizontal brink which forms the base of a window.

1. a horizontal piece or member beneath a window, door, or other opening. 3. a tabular body of intrusive igneous rock, ordinarily between beds of sedimentary rocks or layers of volcanic …

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