psyllium

The English word “psyllium” has 2 meanings listed here.

noun

Any of several plants of Plantago subg. Psyllium.
The seed husk of such plants, especially as a commercial dietary supplement used for mucilage and as a mild laxative.

From Latin psyllium, from Ancient Greek ψύλλιον (psúllion, “fleawort”), from ψύλλα (psúlla, “flea”) + -ιον (-ion, forming neuter diminutives).

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