dȑzak (Serbo-Croatian) comes from Proto-Slavic dьrzъkъ, from Proto-Slavic dьrzъ, from Proto-Balto-Slavic dirs-, from Proto-Indo-European dʰr̥s-u-, from Proto-Indo-European dʰers-, from Proto-Indo-European dʰer- — to support; to hold.
Ancestry of “dȑzak”, step by step
dȑzak traces back through two separate lines of ancestry.