Heofon-fýr
Bosworth & Toller Anglo-Saxon Old English Dictionary - heofon-fýr
According to the Old English Dictionary:
es;
- heofon-fýr
- n. Lightning, II :-- Be ðám muntum . . . þá ðe heáh standað . . . heó beóð genehhe mid heofenfýre geþreáde, Wlfst. 262. 15. heofon-fyr