Heljast

As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):

heljast

v. refl. to work hard (hann ~ á skálasmíð).

Possible runic inscription in Younger Futhark:ᚼᛁᛚᛁᛅᛋᛏ

Also available in related dictionaries:

This headword also appears in dictionaries of other languages closely related to Old Icelandic.

• Old Norwegian - Johan Fritzner's Dictionary