Where does “gulfweed” come from?

gulfweed (English) comes from English gulf, from Middle English gulf, from Old French golf, from Italian golfo, from Latin colfos, from Latin colpus, from Ancient Greek κόλπος, from Proto-Indo-European kʷelp- — to turn.

gulfweed (English): sargassum; algae of the genus "Sargassum"

Definitions

  1. sargassum; algae of the genus "Sargassum"

Ancestry of “gulfweed”, step by step

gulfweed traces back through two separate lines of ancestry.

via English gulf

StepLanguageWordMeaning
1EnglishgulfA hollow place in the earth; an abyss; a deep...
2Middle Englishgulf
3Old Frenchgolf
4Italiangolfogulf
5Latincolfos
6Latincolpusstroke; strike; hit
7Ancient Greekκόλποςbosom, lap; a fold in fabric around the bosom;...
8Proto-Indo-Europeankʷelp-to bend; to curve, arch
9Proto-Indo-Europeankʷel-to turn

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 kʷel-Every word from Proto-Indo-European kʷelp-Every word from Ancient Greek κόλπος