Bráðkallaðr

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

bráðkallaðr

pp., verða ~, to die suddenly.

Possible runic inscription in Younger Futhark:ᛒᚱᛅᚦᚴᛅᛚᛚᛅᚦᚱ