кутел

Unclear. Bulgarian Etymological Dictionary lists as possible origins:

• Inherited from Proto-Slavic *kutьlъ, whence also dial. Serbo-Croatian ку̏тао (“spade”), from the root of Proto-Slavic *kuti (“to hew”);
• Possibly borrowed from a Vulgar Latin reflex of Latin cotyla (“beaker”) or Ancient Greek κοτῠ́λη (kotúlē, “small vessel”), both viewed as phonetically unsatisfactory. True loanwords from this origin are Bulgarian чу́тура (čútura), чо́тра (čótra);
• Possibly borrowed from Greek κουτάλι (koutáli, “spoon”), viewed as semantically unsatisfactory.

• IPA^(key):

ку́тел • (kútel) m (dialectal)

1. mortar (wooden or stony receptacle in which ingredients are ground)
2. small spade, scooper, ladle
3. (historical) medium-size container used as a measure cup

• ку́тъл (kútǎl)
• ку́тла f (kútla)

• куте́лка (kutélka), ку́тлик (kútlik), ку́телец (kútelec), ку́тлица (kútlica, “small container”) (diminutives)

• “кутел”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
• Nayden Gerov (1897) “ку́телъ -тли”, in Рѣчникъ на Блъгарскꙑй язꙑкъ. Съ тлъкувание рѣчи-тꙑ на Блъгарскꙑ и на Русскꙑ. [Dictionary of the Bulgarian language]‎ (in Bulgarian), volume 2, Plovdiv: Дружествена печꙗтница "Съгласие.", page 435
• Georgiev, Vladimir I., editor (1986), “кутел”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 3 (крес¹ – мѝнго¹), Sofia: Bulgarian Academy of Sciences Pubg. House, page 155