hogweed

Pronunciation: /ˈhɒɡwiːd/

The English word “hogweed” has 3 meanings listed here.

noun

Any coarse weedy herb.
An umbelliferous plant, of genus Heracleum, most species of which are phototoxic.
Certain plants from the genera Ambrosia, Erigeron, or Heracleum.

From hog + weed, so named because of its use as feed for pigs.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.