This is the 17591st most frequent Russian word.
тульские
"Tульские" means "Tula's" or "of Tula," referring to something from or related to the city of Tula in Russia.
In this sentence, 'тульские' is used as an adjective to describe 'пряники' (gingerbread), indicating their origin from Tula, a city in Russia known for producing this type of gingerbread.
Я купил тульские пряники на ярмарке.
I bought Tula gingerbread at the fair.
Here, 'тульские' modifies 'мастера' (craftsmen) to specify that these craftsmen come from Tula.
Тульские мастера славятся своим искусством.
Tula craftsmen are famous for their artistry.
In this example, 'тульские' again functions as an adjective, describing 'самовары' (samovars), clarifying their association with Tula as their place of origin.