jezyku
Języku is the locative and vocative singular form of the Polish noun język, which means language or tongue. The base noun can refer to a natural language (for example, język polski, język angielski), the anatomical tongue, or, in a broader sense, a system of signs used for communication within a community. The form języku appears in contexts that require the locative case or, in some stylistic uses, the vocative.
Język is a masculine, inanimate noun. Its singular declension is: Nominative język, Genitive języka, Dative językowi,
In everyday and academic usage, język often denotes both spoken languages and the tongue as an anatomical
Język derives from the Proto-Slavic lexical family related to speech and language. Related concepts include językoznawstwo