Zi Collection, Upper Volume, Page 12, Entry 01 Pronounced lai (falling tone) — Tang Yun (Tang Yun). Pronounced yu kai (falling tone) — Ji Yun (Ji Yun). Same pronunciation as "ai". Explained as "fetus" in Bo Ya (Bo Ya). Explained in Shuowen Jiezi (Shuowen Jiezi) as "slaughtering a sheep and taking out its fetus." Also, pronounced gu ai (falling tone) — Tang Yun (Tang Yun). Pronounced ke kai (falling tone) — Ji Yun (Ji Yun). Same pronunciation as "gai". Same meaning.