the small, one-seeded, greenish-brown fruit of a large evergreen tree, Euphoria longana, of the soapberry family, native to China and allied to the litchi.
the tree itself.
Also, lungan.

1725–35; < Neo-Latin longanum < Chinese lóngyǎn literally, dragon's eye

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World English Dictionary
longan or lungan (ˈlɒŋɡən)
1.  a sapindaceous tree, Euphoria longan, of tropical and subtropical Asia, with small yellowish-white flowers and small edible fruits
2.  the fruit of this tree, which is similar to but smaller than the litchi, having white juicy pulp and a single seed
[C18: from Chinese lung yen dragon's eye]
lungan or lungan
[C18: from Chinese lung yen dragon's eye]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica


(Euphoria longana), tropical fruit tree, of the soapberry family (Sapindaceae), native to Asia and introduced into other warm regions of the world. The tree grows to 9-12 m (30-40 feet). The flowers are small and yellowish white. The almost spherical, yellowish brown, edible fruit, which is also called longan, has a white and juicy pulp

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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