Sprengr

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

sprengr

m. bursting; honum hélt við spreng, he was near bursting from exhaustion; vinna til sprengs, to work oneself to death.

Possible runic inscription in Younger Futhark:ᛋᛒᚱᛁᚾᚴᚱ

Also available in related dictionaries:

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

• Old Norse - Cleasby & Vigfusson Dictionary
• Old Norwegian - Johan Fritzner's Dictionary