reiillä

reiillä is a Finnish word form that occurs as an inflected variant of the noun reikä, meaning hole. It functions as the adessive plural, used to express location on or at holes, and it is typically encountered when describing objects that have perforations or multiple openings on their surface. In standard Finnish orthography, the canonical spelling of the form is reiäillä; in some texts or user-generated content, simplified spellings without the ä diacritic may appear, though these are less common in formal writing.

Morphology and usage are typical of Finnish nominal inflection. The base noun reikä denotes a single hole, while reiäillä (or reiillä in non-diacritic variants) conveys a plural sense related to the holes' location on an object. This form is most likely to be found in descriptive passages about perforated materials, grids, sieves, screens, or other items where holes are a defining feature of the surface.

The term does not denote a separate lexical entry beyond its inflected form; it is a grammatical variant rather than a distinct concept. For broader context, see reikä (hole) and perforation in manufacturing or design descriptions. Reiillä is thus primarily a syntactic tool for describing hole-bearing surfaces in Finnish text.