araca-boi /əˌɹɑsə ˈboɪ/ noun1 •The Brazilian guava tree Eugenia stipitata or its fruit. (Compare araca.)17.2.13 Araca-Boi Fruit [Eugenia stipitata] Araca-boi is a yellow round fruit, about 12 cm in diameter (Franco and Shibamoto, 2000). The fruit has a distinctive acidic flavor. — 2016