翻譯名義集 6.44

6.44

【頞部曇】或遏蒲曇，或頞浮陀。此云疱。狀如瘡疱，胎二七日。

[Arbuda]
Also written as 遏蒲曇 or 頞浮陀. Here translated as "vesicle" (疱). Its shape is like a blister or pustule; it is the second seven days in the womb.