Synonyms for Betel nut:

n.

groundnut, monkey nut, chestnut, almond, coconut, macadamia, cashew, brazil nut, hazelnut. •betel nut (noun)
areca nut.

Other synonyms:

groundnut, monkey nut, chestnut, almond, coconut, macadamia, cashew, brazil nut, hazelnut.