This is the 11705th most frequent German word.
sächsische
"Sächsische" means "Saxon" or "related to Saxony."
The word "sächsische" here is an adjective modifying "Dialekte" (dialects), implying they pertain to or are characteristic of Saxony.
Die sächsische Dialekte sind vielschichtig und interessant.
The Saxon dialects are intricate and interesting.
Here, "sächsische" serves as an adjective that designates "Schweiz" (Switzerland) as related to Saxony, a specific region known as "Saxon Switzerland."
Wir besuchten die sächsische Schweiz im letzten Sommer.
We visited Saxon Switzerland last summer.
In this sentence, "sächsischen" acts as an adjective pertaining to "Könige" (kings), indicating their origin or association with Saxony.