Sentence:  There were also various trolls like great smiling badgers, brownies darting about laughing, dwarves with large gray heads, sensuous mermaids, stony <WSD>kobolds</WSD>, green gnomes, sirens and many elves, who were busy purifying the sacred hilltop in a mythological cooperation marvelous to the soul's perception. 
Meaning of the word marked with <WSD> tags:  One of a diminutive and usually malevolent race of beings.