guarana
[ gwahr-uh-nah, gwahr-uh-nah ]
/ ˌgwɑr əˈnɑ, ˈgwɑr əˌnɑ /
noun
a woody, climbing shrub Paullinia cupana, of the soapberry family, growing in parts of South America, having seeds that contain caffeine and are used in soft drinks.
a drink containing extract of guarana seed.
Origin of guarana
1860–65; (< Portuguese) < Tupi