A piece of timber across the bottom of a canal lock for the gates to shut against
Horizontal member at the bottom of the window frame; a masonry sill or sub-sill can be below the sill of the window unit
structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure
The lowest member of the frame of a structure, usually horizontal, resting on the foundation and supporting the uprights of the frame Also the lowest member of ta window or outside door frame
(geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock
The basis or foundation of a thing; especially, a horizontal piece, as a timber, which forms the lower member of a frame, or supports a structure; as, the sills of a house, of a bridge, of a loom, and the like
An flat metal bar screwed to the bottom of a door flat to secure it to the stage