Where does “бана́н” come from?

бана́н (Russian) comes from French banane, from Spanish banana, from Portuguese banana, from Wolof banaana — banana.

Ancestry of “бана́н”, step by step

Step	Language	Word	Meaning
1	French	banane	banana; chopper, copter, whirlybird; bum bag ,...
2	Spanish	banana	banana
3	Portuguese	banana	banana; penis; bras d'honneur
4	Wolof	banaana	banana

бана́н — Etymology, Origin & Word History | Etymology Explorer