This is the 14838th most frequent Polish word.
regionalnym
"Regionalnym" means "regional" in English, referring to something related to a specific region.
The word 'regionalnym' here is used as an adjective in the locative case to describe 'targu' (market), referring to its regional character.
Produkty dostępne na regionalnym targu są zawsze świeże.
The products available at the regional market are always fresh.
Here, 'regionalnych' is the plural genitive form of the adjective, utilized to modify 'obyczajów' (customs) to imply they are specific to a region.
Podczas podróży poznaliśmy kilka regionalnych obyczajów.
During the journey, we learned about several regional customs.
In this sentence, 'regionalnym' functions in the instrumental case, related to 'wyróżnikiem' (hallmark), emphasizing the attribute of being regional.