What does "longan" mean?

An evergreen tree, Dimocarpus longan, of the Sapindaceae family, native to southern China.

Longan

Common synonyms include: dimocarpus longan, dragon eye, dragon eye fruit, dragon's eye, euphorbia litchi, longanberry.

/ˈlɒŋɡən/ noun

noun ·Rare ·Advanced level

Noun

1
An evergreen tree, Dimocarpus longan, of the Sapindaceae family, native to southern China.
2
tree of southeastern Asia to Australia grown primarily for its sweet edible fruit resembling litchi nuts; sometimes placed in genera Euphorbia or Nephelium wordnet
3
The fruit from the longan tree.

Borrowed from Cantonese 龍眼 /龙眼 (lung⁴ ngaan⁵, literally “dragon’s eye”). Doublet of Longyan (“grape”).