This paper analyses definitions of parts of speech in the grammar of the Croatian Kajkavian literary language by Josip Đurkovečki (Jezičnica horvatsko-slavinska, Budapest, 1826). The analysis includes parts of speech described in the grammar and terms used by the author as he named them. Special attention is paid to definitions of parts of speech taking into account their lexical-semantic, morphological or syntactical bases. The analysis of definitions of parts of speech in J. Đurkovečki’s grammar illustrates the kind of deliberation over language notions that was taking place at the time, as well as the characteristics of grammar discourse within the context of the history of Croatian grammatology, especially iwithin the domain of the Croa...