люлка

люле́я (ljuléja, “to swing, to rock”) +‎ -ка (-ka)

• IPA^(key): [ˈlʲu̟ɫkɐ]

лю́лка • (ljúlka) f (relational adjective лю́лчин, diminutive лю́лчица)

1. cradle
2. swing
3. (by extension) seesaw

• лю́ля (ljúlja, “Calystegia sepium”) (type of flower)
• люля́на (ljuljána, “fever”) (euphemism, standardly called треска (treska))

• лю́ляк (ljúljak, “lilac”) (reshaped to sound like люлка)

• “люлка”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
• “люлка”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010
• Nayden Gerov (1899) “лю́лка”, 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 36
• Georgiev, Vladimir I., editor (1986), “люлка”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volumes 3 (крес¹ – мѝнго¹), Sofia: Bulgarian Academy of Sciences Pubg. House, page 579