Words and Proper Names

treḟocul

16172.
Holmberg (Matthew): Triple utterances and curse-poles: a common form of northern European satire?
In Rhetoric and reality in medieval Celtic literature [Melia studies] (2014), pp. 75–93.
Points out the similarities in form and function between OIr. treḟocul and Norse niðstǫng, arguing in favour of a common origin for these two maledictory practices.