The story
- Hokkien · calque of烏豆 /乌豆
- English todayblack mongo
From black + Spanish mongo, which is a calque of Hokkien 烏豆 /乌豆 (o͘-tāu, literally “black bean”). See also Tagalog utaw (“black mongo”), Cebuano utaw (“black mongo”).
Etymology from Wiktionary, CC BY-SA 4.0.