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Explanation: In the Russian language we have the word casha ("kasha") that means the meal, prepared from groats by boiling in water or milk (e.g. porridge, semolina, boiled rice, etc.).
Sometimes this word can be applied to call the man with weak will (who does not have a strong character or whose character is not built up). However we usually use for this meaning another word "razmaznja" (it is the gruel added with too much water).