出典:Wiktionary
From Ukrainian ковбаса́ (kovbasá /kowbasˈa/, “sausage”, see there for more), a very early Slavic borrowing with no clear antecedent.
The Slavic variants (including Polish kiełbasa, whence kielbasa) point to several reconstructed forms from Proto-Slavic *kъlbasa, *klobasa, *kobasa. It is considered most likely to be borrowed from Proto-Turkic *kül + *bastï, literally “ash pressed”; compare Turkish külbastı (“roasted meat”), basmak (“to press”).
kubasa (countable かつ uncountable, 複数形 kubasas)