The story
Variant of opopanax, a shrub (Opopanax chironium).
Etymology from Wiktionary, CC BY-SA 4.0.
popinac
Today it means: Vachellia farnesiana (syn. Acacia farnesiana), a widely cultivated thorny shrubby acacia of the southern U.S. and tropical America with fragrant ball-shaped yellow flowers. Full definition →