sill
US
UK sill n: (inner ledge of a window)
SC 窗台 chuāng tái
James locked the window and put the key on the sill.
sill n: (bottom of a door)
SC 门槛 mén kǎn
We replaced the door because there was mold spreading upwards from the sill.
sill n: (top of foundation)
SC 底板 dǐ bǎn
The carpenter installed the cabin's sills.
sill n: (geology: rock layer)
SC 岩床
Sills form when magma pushes between existing layers of rock.