grow luxuriously
蕃 centers on abundant, thriving growth, especially of vegetation. The idea is lush, luxurious proliferation.
蕃 combines 艹 (grass, plant) with 番, which likely contributes the sound and may suggest spreading or multiplying, giving the idea of plants growing thickly.
Grass (艹) spreading out in turn (番) like a lush field: 蕃 means growing luxuriously.
For バン, imagine a whole band of lush plants growing together: band -> バン, and the vegetation is thick and luxurious.
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foreign god
soursop (Annona muricata)
Tibetan Empire (618-842 CE)
The Agency for Buddhists and Foreigners (ritsuryō system)
unconquered savage; uncivilized aboriginal
clans supposedly descended from foreign lineage (i.e. Chinese or Korean)
land of the barbarians
Western books (esp. Dutch; in the Edo period)
Institute for the Study of Western Books (Edo period); Institute for the Investigation of Foreign Books
capsicum (Capsicum annuum, esp. the cultivated chili peppers); chili pepper; cayenne; red pepper
aborigines village
tomato (Solanum lycopersicum)
sweetsop (Annona squamosa)
sweet potato
foreign lands