ba·bas·su 
(bä′bə-s)
(bä′bə-s)n.
A Brazilian feather-leaved palm (Orbignya phalerata) having hard-shelled fruits whose seeds yield an oil used in food and skin-care products and as a biofuel.
[Portuguese babaçú, from Tupí babassú, ibabassú : ibá, fruit + -bassú, variant of -assú, -guassú, big.]