Where does “buffaloweed” come from?

buffaloweed (English) comes from English Buffalo, from Spanish búfalo, from Latin būfalus, from Latin būbalus, from Ancient Greek βούβαλος, from Ancient Greek βοῦς, from Latin corvus, from Proto-Italic korwos — army.

Ancestry of “buffaloweed”, step by step

buffaloweed traces back through two separate lines of ancestry.

via English Buffalo

StepLanguageWordMeaning
1EnglishBuffaloA placename
2Spanishbúfalobuffalo; buffalo, the American bison
3Latinbūfalus
4Latinbūbalusantelope, gazelle
5Ancient GreekβούβαλοςA species of antelope, possibly the bubal...
6Ancient Greekβοῦςcow, ox, cattle; shield: ὃτι ἐκ βοείων ἐστι...
7LatincorvusA raven; a bird associated with prophecy and...
8Proto-Italickorwos
9Proto-Indo-Europeanḱorh₂wós
10Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
11Proto-Indo-Europeankr̥-to turn, to bend
12Proto-Indo-Europeanker-army

via English weed

StepLanguageWordMeaning
1EnglishweedAny plant regarded as unwanted at the place...
2Middle Englishweed
3Old Englishwēodweed
4Proto-West Germanic*weudweed (unwanted plant)
Every word from Proto-Indo-European ker-Every word from Proto-Indo-European kr̥-Every word from Proto-Indo-European ḱer-