Where does “Pyrrol” come from?

Pyrrol (German) comes from Ancient Greek πυρρός, from Ancient Greek πῦρ, from Proto-Indo-European péh₂wr̥ — bonfire; spelt.

Ancestry of “Pyrrol”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	πυρρός	flame-coloured, yellowish-red; red-haired,...
2	Ancient Greek	πῦρ	a fire; lightning; a fever
3	Proto-Indo-European	péh₂wr̥	bonfire; spelt

Pyrrol — Etymology, Origin & Word History | Etymology Explorer