"River-man." In Norway, a water spirit at whose music trees dance and water-falls stay their course. He has eleven different musical measures, to ten of which people may dance, but the eleventh belongs to the night spirit, his host.
- Bonnerjea, Biren. (1920). A Dictionary of Superstitions and Mythology. Thomson Gale.
- Cobham Brewer, E. (2001). The Dictionary of Phrase and Fable. Cassell reference.