betel nut 
noun
Another term for areca nut.Consumption of smokeless tobacco, especially Gutkha (a mixture of areca, catechu, betel nut, lime, tobacco, and mint), is rising among school children in rural India....
- Gutkha is a mixture of areca, catechu, betel nut, lime, tobacco and mint.
- To support themselves, farmers in Nantou and other mountain areas have extensively planted betel nut trees - betel nut is widely chewed on Taiwan.
Origin
Portuguese betel.