Definitions for "Sill"
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.
The timber or stone at the foot of a door; the threshold.
The timber or stone on which a window frame stands; or, the lowest piece in a window frame.
(of a variogram): The value of the variogram for distances beyond the range of the variogram. The Power model does not have a sill.
the maximum level of semivariance reached by a transitive semi-variogram.
The upper limit of any variogram model which has such a limit, i.e., which tends to “level off” at large distances. In Geo-EAS, the spherical, gaussian, exponential, and nugget models have sills. For the linear model, “sill/range” is used merely to define the slope.
Keywords:  shelf, masonry, gates, busc, mur
The masonry shelf on which the upstream lock gates are mounted. Care must be taken to have the stern clear of it to prevent damage to the boat when descending. Faux busc and mur de chute in French
A masonry shelf upon which the upper lock gates rest; it is below water but care should be taken to be forward of it when locking down
Keywords:  stockade, soffit
Soffit Stockade
Keywords:  cill, see
See cill
Keywords:  thill, carriage, shaft
The shaft or thill of a carriage.
Keywords:  silu, saddle, basins, gap, separating
the low part of a gap or saddle separating basins SILU
Keywords:  gallery, rot, floor, lumber, mine
The floor of a gallery or passage in a mine.
Pressure treated, rot-resistant piece of lumber between the foundation and the first floor deck.
Keywords:  flange, see
see flange
Keywords:  young, herring
A young herring.