Rigna

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

rigna

(-di, -dr), v. to rain upon, wet with rain (var hann með engu móti rigndr eða vátr); impers., rignir, it rains; with dat., þar með rigndi á þá blóði vellanda, it also rained boiling blood on them.

Possible runic inscription in Younger Futhark:ᚱᛁᚴᚾᛅ

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