The story
- Proto-West Germanic · derived from*bōku
- Proto-Slavic · derived from*buky
- Old Church Slavonic · borrowed fromбоукꙑ
- English todaybuky
From Old Church Slavonic боукꙑ (buky), from Proto-Slavic *buky, from Proto-West Germanic *bōku. Doublet of beech.
Etymology from Wiktionary, CC BY-SA 4.0.