"longan" in Thai

Longan is a small fruit, similar to the lychee, which is common in Thailand and elsewhere in Asia.

The longan (龍眼 lóng yǎn, lit. "dragon eye"[1]), is so named because it resembles an eyeball when its fruit is shelled (the black seed shows through the translucent flesh like a pupil/iris). The seed is small, round and hard, and of an enamel-like, lacquered black. The fully ripened, freshly harvested shell is bark-like, thin, and firm, making the fruit easy to shell by squeezing the fruit out as if one is "cracking" a sunflower seed.

Quote taken from the Wikipedia page about the longan

See also this Wikipedia video showing the fruit being peeled and eaten.