Where does “crusá” come from?

crusá (Karirí) comes from Latvian krusa, from Old Tupi -a, from Old Tupi pó, from Proto-Tupi-Guarani *po, from Proto-Tupian *po — hand.

Ancestry of “crusá”, step by step

StepLanguageWordMeaning
1Latviankrusahail
2Old Tupi-aforms nouns from a word's stem
3Old Tupipóhand
4Proto-Tupi-Guarani*pohand
5Proto-Tupian*pohand
Every word from Proto-Tupian *po →Every word from Old Tupi -a →Every word from Proto-Tupi-Guarani *po →
crusá — Etymology, Origin & Word History | Etymology Explorer