лайка

Bulgarian Wikipedia has an article on:

лайка

Wikipedia ^bg

Uncertain:

• Mladenov: Modified deverbal of ле́я (léja, “to pour”) +‎ -ка (-ka), presumably from an earlier *ляйка.
• Lj. Kurkina: Deverbal of Proto-Slavic *lajati (“to lie in ambush”) + -ка (-ka).

Doublets have been confused (by folk etymology) for a compound of лай (laj, “barking”) +‎ куче (kuče, “dog”).

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• Hyphenation^(key): лай‧ка

ла́йка • (lájka) f (diminutive ла́йчица)

1. camomile (flower of genus Matricaria)

   медици́нска ла́йка ― medicínska lájka ― medicinal camomile

   чай от ла́йка ― čaj ot lájka ― camomile tea

• лайкуче n (lajkuče), лайкучка f (lajkučka), лайкуца f (lajkuca) — dialectal

• “лайка”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
• “лайка”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010
• Nayden Gerov (1899) “лай-ку́чка, лай-лай-ку́чка”, in Рѣчникъ на Блъгарскꙑй язꙑкъ. Съ тлъкувание рѣчи-тꙑ на Блъгарскꙑ и на Русскꙑ. [Dictionary of the Bulgarian language]‎ (in Bulgarian), volume 3, Plovdiv: Дружествена печꙗтница "Съгласие.", page 2
• Georgiev, Vladimir I., editor (1986), “лайка¹”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 3 (крес¹ – мѝнго¹), Sofia: Bulgarian Academy of Sciences Pubg. House, page 285

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Russian Wikipedia has an article on:

лайка

Wikipedia ^ru

лай (laj) +‎ -ка (-ka)

ла́йка • (lájka) f anim or f inan (genitive ла́йки, nominative plural ла́йки, genitive plural ла́ек)

1. Laika (lit., barker), a native Russian breed of dog, a rather small hunting dog of Russia’s northern forests, similar to a husky
2. kidskin, kid leather

ла́йка • (lájka) m inan

1. genitive singular of лайк (lajk)

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ла́йка • (lájka) f inan (genitive ла́йки, nominative plural ла́йки, genitive plural лайк)

1. invective, swearing
2. Laika (lit., barker), a native Russian breed of dog, a rather small hunting dog of Russia’s northern forests, similar to a husky
3. kidskin, kid leather

• матю́к (matjúk)

• ла́яти (lájaty)
• ла́ятися (lájatysja)

• Bilodid, I. K., editor (1970–1980), “лайка”, in Словник української мови: в 11 т. [Dictionary of the Ukrainian Language: in 11 vols] (in Ukrainian), Kyiv: Naukova Dumka
• “лайка”, in Горох – Словозміна (in Ukrainian)