Etymology and origin of the Old Norse word óss
- Confidence
- Established
- Formation
- Inherited
- First attested
- c. 1000 runic inscription IR 12 More words from the 10th century
- Inherited from
- Proto-Germanic *ōsaz
- Ultimate origin
- Proto-Indo-European *h₃éh₁os
Forms
óss m (genitive óss, plural ósar) (strong a-stem)[1]
Etymology
It is inherited from Proto-Germanic *ōsaz (“mouth, river mouth”),[1][2][3] for which de Vries and Köbler reconstruct Proto-Norse *ōsaʀ.[4][5] The Germanic noun is otherwise known only in Norse, unless Old English ōr (“beginning, origin”) and ōra (“edge, bank”) belong to it, as Orel and Ásgeir Blöndal Magnússon hold.[2][6][3]
It continues the Indo-European word for “mouth”: Latin ōs (“mouth”), Sanskrit आस् (ā́s, “mouth”) and Hittite aiš (“mouth”).[3][1] Closer in sense are ōstium (“entrance, river mouth”) and Lithuanian úostas (“river mouth, harbour”).[6][4] The older handbooks start from a root Proto-Indo-European *ōus-, *əus- (Pokorny 784), which would also cover the Slavic word for “mouth”;[6][7] Wiktionary gives Proto-Indo-European *h₃éh₁os,[1] and Kroonen, reckoning with an old mobile s-stem, leaves open which laryngeals the root had.[3]
Earliest recorded meaning
The earliest record is runic: an antler from Fishamble Street in Ireland, which Rundata dates to about 1000, reads hurn hiartaR la a ys aR, normalised Horn hjartar lá á ósi ár “a deer's antler lay at the mouth of a river”.[8] In the manuscripts ONP's first citation is of 1220: þeir como til oꜱens “they came to the river mouth”.[9]
Semantic evolution
Nearly all of ONP's citations mean the mouth or outlet of a river or lake, or an estuary; a single one, in Snorra Edda, may mean the source.[9] Faulkes glosses one instance as the outlet where a river comes out of a cleft, not its mouth at the sea,[10] and Zoëga explains the saying at ósi skal á stemma “a river must be dammed at its óss” with the sense “fountain-head”.[11] The laws use it of a boundary: in Grágás a new mouth breaking through a man's foreshore does not move the old boundary, which the old óss still marks.[12][9] It is frequent in place-names, such as Niðaróss in Norway and the Danish towns now called Aarhus and Randers.[12] Skaldic poets used the word for water in kennings for gold, such as “fire of the river mouth”.[13][14] It was also the name of the rune for ó.[15][16]
The word lives on as Icelandic ós and Swedish os.[6][17] De Vries lists loans in the Orkney and Shetland dialects, in Scots and in the Hebrides.[4] Cox accepts Scottish Gaelic òs (“outlet of a loch or river”) as a Norse loan in Scottish Gaelic, on the evidence of place-names that combine it with the Gaelic article.[18]
Timeline
- c. 1000 – á ósi on the antler from Fishamble Street, Ireland.[8]
- 1220 – oꜱens “the river mouth”, ONP's first manuscript citation.[9]
- 1225–1250 – ose, osenom, osenn in DG 8 II.[19]
- 1250 – nyia ósa “new river mouths” in the law of Grágás.[9]
- 1320–1350 – óss, ósinum in the Laxdæla saga of AM 132 fol.[20]
- 1325 – the uncertain sense “source” in Snorra Edda.[9]
Meanings
Noun
- the mouth or outlet of a river or lake, an estuary.[9][11][21]
- a source, fountain-head (uncertain).[9][11]
- the name of the rune for ó.[15][16]
Word family
- áróss
- fjarðaróss
- lœkjaróss
- merkióss
- vatnsóss
Descendants
- Danish os[1]
- Faroese ósi[1]
- Icelandic ós[1]
- Norwegian Bokmål os[1]
- Norwegian Nynorsk os[1]
- Old Swedish ōs[1]
- Swedish os[1]
Related words
- ósi
Usage notes
The same spelling has two other, rarer words: óss “god”, a form of áss, and a poetic adjective óss “sparkling”.[22][5][10] The pronoun oss “us” is a different word.[4]
References
- ^ a b c d e f g h i j k Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill, p. 290
- ^ a b c d Kroonen, Guus (2013), Etymological Dictionary of Proto-Germanic, Leiden Indo-European Etymological Dictionary Series 11, Leiden / Boston: Brill, p. 394
- ^ a b c d de Vries, Jan (1977), Altnordisches etymologisches Wörterbuch, 2nd ed., Leiden: Brill, p. 421
- ^ a b Köbler, Gerhard, Altnordisches Wörterbuch, online, koeblergerhard.de/wikiling (Leiden Indo-European Etymological Dictionary database copy), p. s.v. óss
- ^ a b c d Ásgeir Blöndal Magnússon (1989), Íslensk orðsifjabók, Reykjavík: Orðabók Háskólans, ordsifjabok.arnastofnun.is, p. s.v. ós
- ^ Köbler, Gerhard (2014), Germanisches Wörterbuch, 5th ed., online, koeblergerhard.de/wikiling, p. s.v. *ōsaz
- ^ a b Samnordisk runtextdatabas (Rundata 3.1), Uppsala universitet (inscriptions by signum), p. IR 12
- ^ a b c d e f g h Ordbog over det norrøne prosasprog / A Dictionary of Old Norse Prose, Copenhagen, onp.ku.dk (CC BY-SA 4.0), p. s.v. óss
- ^ a b Faulkes, Anthony (2011), A New Introduction to Old Norse III: Glossary and Index of Names, 4th ed., London: Viking Society for Northern Research, p. s.v. óss
- ^ a b c Zoëga, Geir T. (1910), A Concise Dictionary of Old Icelandic, Oxford: Clarendon Press, p. s.v. óss
- ^ a b Cleasby, Richard; Vigfússon, Guðbrandur (1874), An Icelandic-English Dictionary, Oxford: Clarendon Press, p. 473
- ^ Sveinbjörn Egilsson (1860), Lexicon poeticum antiquæ linguæ septentrionalis, Hafniæ: Societas regia antiquariorum septentrionalium, p. 633
- ^ Meissner, Rudolf (1921), Die Kenningar der Skalden, Bonn & Leipzig, p. 232
- ^ a b Fritzner, Johan (1886–1896), Ordbog over det gamle norske Sprog, 2nd ed., Kristiania, p. s.v. óss
- ^ a b Hægstad, Marius; Torp, Alf (1909), Gamalnorsk ordbok med nynorsk tyding, Kristiania: Det norske samlaget, p. 327
- ^ Hellquist, Elof (1922), Svensk etymologisk ordbok, Lund, p. s.v. os
- ^ Cox, Richard A. V. (2024–2026), Old Norse Loan-Words in Scottish Gaelic, Clann Tuirc, richardavcox.scot/ONlwSG, p. s.v. òs
- ^ Menota: Medieval Nordic Text Archive, menota.org (texts by shelfmark; CC BY-SA 4.0), p. DG 8 II
- ^ Menota: Medieval Nordic Text Archive, menota.org (texts by shelfmark; CC BY-SA 4.0), p. AM 132 fol
- ^ Baetke, Walter (1965–1968), Wörterbuch zur altnordischen Prosaliteratur, Berlin (digital ed. Greifswald 2006), p. 473
- ^ Ásgeir Blöndal Magnússon (1989), Íslensk orðsifjabók, Reykjavík: Orðabók Háskólans, ordsifjabok.arnastofnun.is, p. s.v. óss
Related etymologies
Cite this entry
“Óss.” Etymologically, 14 Nov. 2026, etymologically.com/non/%C3%B3ss. Accessed 14 Nov. 2026.
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