Tundra

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

tundra

(að), v. to catch fire (eldrinn ~ði skjótt).

Possible runic inscription in Younger Futhark:ᛏᚢᚾᛏᚱᛅ

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