Where does “грушка” come from?

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

Ancestry of “грушка”, step by step

StepLanguageWordMeaning
1Ukrainianгру́шаpear (fruit or tree)
2Latviankrusahail
3Old Tupi-aforms nouns from a word's stem
4Old Tupipóhand
5Proto-Tupi-Guarani*pohand
6Proto-Tupian*pohand
Every word from Proto-Tupian *po →Every word from Old Tupi -a →Every word from Proto-Tupi-Guarani *po →