Sentence:  In these manuscripts we are again in an atmosphere of eotens and <WSD>trolls</WSD>, there are traces of even older terrors, when the first Teuton settlers in Europe struggled with the aborigines who lived in caves[.] 
Meaning of the word marked with <WSD> tags:  A supernatural being of varying size, now especially a grotesque humanoid creature living in caves or hills or under bridges. (from early 17th c.)