Grévigr
Grévigr is a term that appears in certain historical sagas and mythological texts, particularly those of Old Norse origin. Its exact meaning and usage can vary depending on the specific context of the text, but it generally refers to a jötunn, a type of supernatural being in Norse mythology. Jötnar are often depicted as powerful, monstrous, and sometimes hostile figures, distinct from the gods (Æsir and Vanir) and humans.
In some instances, grévigr might be used as a specific name for a jötunn, while in others