What does kakashka mean in Russian?

"Kakashka" in Russian means "poop" or "shit" (a very informal and vulgar term). It is considered highly offensive and rude to use this word in most situations.

It's important to be mindful of the connotations of words, especially when learning a new language.

If you're looking for a more polite way to say "poop" in Russian, you can use "kal" (ка́л), which is the more formal term.