Where does “tora” come from?

tora (Catalan) comes from Late Latin phthora, from Ancient Greek φθορά, from Ancient Greek φθείρω, from Proto-Hellenic kʷʰtʰéřřō, from Proto-Indo-European dʰgʷʰér-ye-ti, from Proto-Indo-European dʰgʷʰer- — flow, diverge; perish.

tora (Catalan): aconite

Definitions

aconite

Ancestry of “tora”, step by step

Step	Language	Word	Meaning
1	Late Latin	phthora	—
2	Ancient Greek	φθορά	destruction, ruin; passing out of existence,...
3	Ancient Greek	φθείρω	I destroy; I ruin, spoil
4	Proto-Hellenic	kʷʰtʰéřřō	—
5	Proto-Indo-European	dʰgʷʰér-ye-ti	—
6	Proto-Indo-European	dʰgʷʰer-	flow, diverge; perish

Every word from Proto-Indo-European dʰgʷʰer- →Every word from Proto-Indo-European dʰgʷʰér-ye-ti →Every word from Proto-Hellenic kʷʰtʰéřřō →