sill
/sɪl/
noun
- The flat piece at the bottom of a window frame.
- Rainwater pooled on the stone sill outside the kitchen window.
- He sat on the sill and watched the birds in the garden.
- She placed a potted plant on the window sill.
- The horizontal piece at the bottom of a door frame.
- They replaced the old metal sill with a new oak one.
- Be careful not to trip on the raised sill when you enter.
- The wooden door sill was worn down from years of use.
- A horizontal layer of rock or other material between layers of different rock.
- Geologists studied the volcanic sill that cut across the sedimentary layers.
- The cliff face showed a dark sill of basalt between lighter limestone.
- The miners broke through a thick sill of granite.