續一切經音義 4.142

4.142

椰子（上以嗟反切韻果木名也出交州其葉背面相類案食之止渴）。

椰子 (Coconut: the upper character has the fanqie 以嗟; the Qieyun says it is the name of a fruit tree produced in Jiaozhou; the front and back of its leaves resemble each other; note: eating it quenches thirst).