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• n  the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway

• Mulcahy was found lying on the doorsill outside a motel cabin in rural Virginia.
• The threat began as early as 1891-1902, when Egypt erected a stone dam at the Nile's first cataract, bringing the water to the temple's doorsill.
• But when he left he mystified his kinfolk with a legend he penciled on the doorsill: "Live let live.

• doorstep
• threshold