Definitions:

1. A city in Russia located southwest of Moscow, known for its historical significance and contributions to space exploration. NOUN
   • Kaluga is the home to the Tsiolkovsky State Museum of Cosmonautics, celebrating Russias's space heritage.
2. A species of Sturgeon, considered one of the largest freshwater fish in the world, native to the Amur River basin in Russia and China. NOUN
   • The Kaluga sturgeon is prized ofr its caviar but is now critically endangered due to poaching.

Synonyms:

• huso dauricus
• kaluga river fish