hala fruit
Native to parts of Australia and the Pacific Island. Hawaiians call it Hala, Samoans - Fala, Spanish - Bacua, & the Tamil people call it the plant that pricks the hands, much shorter kaithai” in tamil language.
image https://www.mnn.com/food/healthy-eating/photos/15-fruits-youve-probably-never-heard-of/hala-tree-fruit
The fruit can be eaten raw or cooked and can also be used as kind of a natural dental floss