Amniotic sac, amnion.
A thin membrane forming a closed sac about the embryos of reptiles, birds, and mammals and containing a serous fluid in which the embryo is immersed.
When that child was born he had not yet come out of his amniotic sac.
Magseykula' nakanak miya'an panganak iyehin.
That child was inside the amniotic sac when she was born.