Where does “psyllium” come from?

psyllium (English) comes from Latin psyllium, from Ancient Greek ψύλλιον, from Ancient Greek ψύλλα, from Proto-Indo-European *plus- — flea.

psyllium (English): Any of several plants of the subgenus Plantago...

Definitions

Step	Language	Word	Meaning
1	Latin	psyllium	—
2	Ancient Greek	ψύλλιον	fleawort
3	Ancient Greek	ψύλλα	flea; type of venomous spider, perhaps a type of...
4	Proto-Indo-European	*plus-	flea