guayusa

[ gwahy-yoo-suh, wahy- ]
/ gwaɪˈyu sə, waɪ- /

noun

a tree, Ilex guayusa, native to the rainforest in the upper Amazon river basin.
the leaves of this tree, containing caffeine, theobromine, theophylline, and other compounds, prepared as a tea and used as a stimulant.

Example sentences from the Web for guayusa