yaupon /ˈjoʊˌpɑn/ noun2 •The yaupon holly, Ilex vomitoria, an evergreen holly shrub with white flowers and red or yellow berries, found in the south-eastern United States.“I found some yaupon and made some tea. It's North America's only native caffeinated plant. Well, dahoon, but you're not gonna find that in --” — 2025 •A tea-like drink, "black drink", brewed from the leaves of this holly (or, sometimes, Ilex cassine). formsyaupons