Definition from Wiktionary, the free dictionary
There is few theories of its orign:
- Derksen: From Proto-Indo-European *masd-to-? Gognate with Latin mālus (“mast, pole”) and Old High German mast (“mast”).
- From *mesti (“to throw, to drop”). Early form is met-tos that means "something what is dropped, thrown over".
- From *mazd-to-s "aggregate of timbers or boards", where -to- is collective suffix.
- Vasmer: German origin is unreliable, judging by diversity of meanings and derived forms in Slavic languages and peculiarities of accent. Slavic forms hardly derives from *mazd-to. Doubtfully erect to *mot-tos.
- (Author?): Borrowed from a *mastaz. Compare English mast and German Mast.
Declension of *mostъ (hard o-stem)
- East Slavic:
- South Slavic:
- West Slavic:
- Rick Derksen (2008), Etymological Dictionary of the Slavic Inherited Lexicon, Brill: Leiden-Boston, page 326f
- “мост” in Max Vasmer (1986), Etimologičeskij slovarʹ russkogo jazyka [Etymological Dictionary of the Russian Language], in 4 vols (second edition), Moscow: Progress — Translated from German and supplemented by O. N. Trubačóv
- “*mostъ” in Oleg Trubačóv (ed.) (1974–), Etimologičeskij slovarʹ slavjanskix jazykov [Etymological dictionary of Slavic languages], Moscow: Nauka, volume 20, page 30fff