Sentence:  Some <WSD>Chuds</WSD> had attained a prominent position at the court of the early Russian  princes. Military campaigns against the <WSD>Chuds</WSD> are mentioned in the chronicles from the 11th century. They were defeated by Prince Iaroslav Vladimirovich [...] 
Meaning of the word marked with <WSD> tags:  A member of any of several Finnic peoples in the area of what is now Estonia, Karelia and Northwestern Russia.