Riðlast

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

riðlast Old Icelandic word can mean:

riðlast

(að), v. refl.

riðlast

1) to break rank, fall into disorder (riðlaðist fylkingin ok losnaði öll); riðluðust þá förunautar hans frá honum, his followers slunk away;

riðlast

2) to cluster; með riðluðum vínviðum af vínberjum ok allskyns aldini, vines clustered with grapes and all kinds of fruit.

Possible runic inscription in Younger Futhark:ᚱᛁᚦᛚᛅᛋᛏ