[3] Ófnir: One of the mythical serpents that destroy the roots of the ash Yggdrasill (Grí 34/7; SnE 2005, 19). The root vowel is either long (Ófnir lit. ‘instigator’) or short (Ofnir lit. ‘weaver’). Ófnir is also an Óðinn-heiti (Þul Óðins 7/4; for a discussion of this word, see Note there). In poetry, the name is used as a heiti for ‘serpent’ in general.