This study aims to explore the lexical system of Nasi Hadap-hadapan as a linguistic representation of local wisdom within the Langkat Malay community. Grounded in the framework of culinary language relativity, the research adopts an integrated linguistic and anthropological approach to reveal how language encodes cultural knowledge. Linguistic analysis was employed to identify and systematically document Malay culinary lexicons, while anthropolinguistic methods were used to organize these lexical items into cultural realms and domains. The findings indicate that the Nasi Hadap-hadapan tradition encompasses 58 distinct lexicons, which are classified into three main categories: 34 lexicons denoting types of dishes, 13 lexicons referring to food-processing techniques, and 11 lexicons associated with culinary tools. Further analysis across realms and domains demonstrates that these lexicons are not merely nominative linguistic units but function as symbolic expressions of cultural meaning. Collectively, they reflect the worldview of the Langkat Malay community, as manifested in shared attitudes, behavioral patterns, and socially sanctioned values and norms. In this way, the lexicon of Nasi Hadap-hadapan serves as a linguistic medium through which local wisdom is preserved, communicated, and reinforced within the community.