一切經音義 8.184

8.184

胞初生（庖皃反樹花胞胎也忉利天上波質多樹花欲開時先生胞說文婦人懷妊兒生衣也字書正體作包或有作皰皰音蒲皃反其義亦通）。

胞初生 (the fanqie 庖 + 皃 [pāo]; the budding placenta of a tree flower. When the pāriyātra tree in the Trāyastriṃśa Heaven is about to bloom, it first produces buds. The Shuowen: "The fetal membrane when a woman is pregnant." Dictionaries give the standard form as 包; some write it as 皰, pronounced with the fanqie 蒲 + 皃 [pào], which is also acceptable in meaning).