ручей

From Proto-Slavic *ručьjь. Morphologically equivalent to руча́ (ručá, “to drone, to rattle”) +‎ -ей (-ej).

• IPA^(key): [ˈrut͡ʃej]

ру́чей • (rúčej) m (diminutive ру́чейче)

1. brook, creek, beck (small, relatively fast river or stream)

   Synonym: (dialectal) блюка́ло (bljukálo)

2. (by extension) stream, flux

   Synonyms: пото́к (potók), (dialectal) стру́га (strúga)

• ручейни́к (ručejník, “caddisfly”)

• ру́квам impf (rúkvam), ру́кна pf (rúkna, “to erupt, to gush; to shout, to cry out”)
• руча́ло (ručálo), ручи́ло (ručílo, “chanter, pipe”)

• ручей in Rečnik na bǎlgarskija ezik (Institut za bǎlgarski ezik)
• ручей in Rečnik na bǎlgarskija ezik (Čitanka.Info)
• Račeva M., Todorov T., editor (2002), “ручей”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 6, Sofia: Bulgarian Academy of Sciences, page 356

Inherited from Proto-Slavic *ručьjь. Compare Ukrainian руча́й (ručáj), Czech ručej, Polish ruczaj.

• IPA^(key): [rʊˈt͡ɕej]

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руче́й • (ručéj) m inan (genitive ручья́, nominative plural ручьи́, genitive plural ручьёв, diminutive ручеёк)

1. brook, stream, creek

• речу́шка (rečúška)
• руче́йник (ručéjnik)
• ру́чейный (rúčejnyj)
• ручьево́й (ručʹjevój)