Where does “cumbuca” come from?

cumbuca (Portuguese) comes from Old Tupi kuîmbuka, from Old Tupi kuîa, from Old Tupi -a, from Old Tupi pó, from Proto-Tupi-Guarani *po, from Proto-Tupian *po — hand.

cumbuca (Portuguese): bowl

Definitions

bowl

Ancestry of “cumbuca”, step by step

Step	Language	Word	Meaning
1	Old Tupi	kuîmbuka	bowl
2	Old Tupi	kuîa	calabash
3	Old Tupi	-a	forms nouns from a word's stem
4	Old Tupi	pó	hand
5	Proto-Tupi-Guarani	*po	hand
6	Proto-Tupian	*po	hand

Every word from Proto-Tupian *po →Every word from Old Tupi -a →Every word from Proto-Tupi-Guarani *po →