 sill |
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| 1. | [ noun ] structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure | |
| Related terms: | structural_member windowsill doorsill | |
| 2. | [ noun ] Last name, frequency rank in the U.S. is 8882 | |
| 3. | [ noun ] (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock | |
| Related terms: | rock geology | |
| Similar spelling: |
silly silo sial Sialia swill shill |
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