celowniklocativ
Celowniklocativ is a term used in theoretical linguistics to describe a hypothetical grammatical category that combines the functions of the Polish celownik (dative) and the locativ (locative) into a single marker or analytic construction. It is not a standard case found in natural languages, but it appears in discussions of case fusion, multi-function marking, and historical development of case systems as a possible or proposed feature rather than an attested grammar in any language.
In morphology, celowniklocativ could be realized as a fused inflection on nouns or pronouns that encodes both
Cross-linguistic parallels are discussed in theoretical work, where certain languages show overlap between dative and locative
See also: Dative case, Locative case, Case fusion, Double object constructions, Instrumental.