Válgr

As defined by the Cleasby & Vigfusson Old Norse to English dictionary:

válgr

adj., or better valgr, sounded volgr; [this word, so freq. in mod. usage, is not found in old writers (FaS. i. 84 is a paper MS.); they always use fjálgr (q. v.), identical in sense, but unknown in mod. Icel.; the mod. form, glóð-volgr, ember-hot, exactly answers to glóð-fjálgr’ of the Ýt.; in-fjálgr, Hkv., must be a false reading for ú-fjálgr = ofjelg, a word frequent in the mod. Norwegian dialects, meaning ‘un-warm,’ i. e. cold, chilly, dismal, see Ivar Aasen; in A. S. wealg occurs in a single instance, viz. in Gregory’s Pastorale of King Alfred, edited by Mr. Sweet]:—warm, luke-warm; en með því þú ert volgr, og hvorki kaldr né heitr, mun ek út-skirpa þér af mínum munni, Rev. iii. 16; it is in rendering this very passage that king Alfred (l. c.) uses wealgh, so there can be no doubt as to the identity of the A. S. and Icel. word: passim in mod. usage, volg mjólk, volgt blóð, glóð-volgr, spen-volgr; spenvolg mjólk, milk warm from the cow.

Possible runic inscription in Younger Futhark:ᚢᛅᛚᚴᚱ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements