Slavic languages, like for example Belarusian шчаўе, Russian and Ukrainian щавель, shchavel, Polish szczaw. The soup name comes ultimately from the Proto-Slavic...

Кот (cat), Кошка (she-cat), Жеребец (Stallion), Корова (cow), Щавей (from щавель, Rumex), Трава (grass), Пырей. It is believed that this kind of name is...