Where does “калуга” come from?

калуга (Bulgarian) comes from Russian Калу́га, from Russian лужа, from Proto-Slavic luža, from Proto-Slavic lugja.

калуга (Bulgarian): mudtrap, quicksand liquified mud in which one could sink

Definitions

  1. mudtrap, quicksand liquified mud in which one could sink

Ancestry of “калуга”, step by step

калуга traces back through two separate lines of ancestry.

via Russian Калу́га

StepLanguageWordMeaning
1RussianКалу́гаkaluga, great Siberian sturgeon type of sturgeon
2Russianлужаpuddle, pool
3Proto-Slaviclužapuddle, pool
4Proto-Slaviclugja—

via Proto-Slavic *kaluga

StepLanguageWordMeaning
1Proto-Slavic*kalugapuddle
Every word from Proto-Slavic lugja →Every word from Proto-Slavic luža →Every word from Russian лужа →