Where does “пиеса” come from?

пиеса (Bulgarian) comes from French pièce, from Middle French piece, from Old French piece, from Vulgar Latin pettia, from Latin pettia, from Gaulish pettyā, from Proto-Celtic kʷezdis — piece, portion.

пиеса (Bulgarian): play (dramatic text)

Definitions

play (dramatic text)

Ancestry of “пиеса”, step by step

Step	Language	Word	Meaning
1	French	pièce	room; piece; coin
2	Middle French	piece	piece, bit, part; moment
3	Old French	piece	piece, bit, part; circa 1170, Chrétien de Troyes
4	Vulgar Latin	pettia	piece, portion
5	Latin	pettia	piece, portion
6	Gaulish	pettyā	—
7	Proto-Celtic	kʷezdis	piece, portion

Every word from Proto-Celtic kʷezdis →Every word from Gaulish pettyā →Every word from Latin pettia →