Rífa

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

rífa Old Icelandic word can mean:

rífa

(ríf; reif, rifum; rifinn), v.

rífa

1) to rive, tear (þeir létu dýr ok hrafna r. hræin); r. klæði af sér, to tear off one’s clothes; r. aptr, to rip up (Þ. vildi at aptr væri rifit sárit); r. ofan, r. niðr, to pull down; r. í sundr, to tear asunder;

rífa

2) impers. to be rent, give way (reif seglit).

Possible runic inscription in Younger Futhark:ᚱᛁᚠᛅ