Silled

Silled is an English adjective used to describe something that is provided with a sill, particularly in architectural or carpentry contexts. A sill is a horizontal ledge or project at the base of a structure such as a window or doorway, and when a component is described as silled, it implies that this ledge is present as part of the design or installation.

The term is formed from the noun sill with the -ed suffix, functioning as a descriptive or participial adjective. In modern technical writing, silled is most commonly encountered in discussions of windows, doors, or other openings where the presence of a base sill affects performance, drainage, or weather sealing. Because it is a specialized term, it tends to appear in architectural catalogs, construction specifications, and design documentation rather than in everyday speech.

In other fields, the word sill has different standard meanings—for example in geology, where a sill refers to a sheet of intrusive igneous rock. In such contexts, the adjective silled is not standard usage, and writers typically avoid it in favor of phrases like “with a sill” or simply refer to the feature as a sill. When using silled, writers should ensure clarity by defining the term or providing context, since readers may not be familiar with the construction-specific meaning.

See also: sill, window sill, door sill, architectural terminology.