kirjoilla
Kirjoilla is a Finnish noun form meaning "on the books" or "at the books." It is the plural adessive form of kirja (book) and is used to express location, indicating that something is located on top of or at the books.
In Finnish, the adessive case denotes position on a surface or at a place. The plural adessive
Usage and nuance: kirjoilla is used when describing the location of objects relative to multiple books or
Related forms and notes: The singular form is kirjalla (on the book). Other related cases for kirja
See also: Finnish grammar, Finnish noun declension, list of cases.