old variant of 冥[ming2]
Depicts two hands (𠬜) opening a woman's legs with a baby's head protruding out of it. Based on the original meaning "to give birth to a child", now written as 娩. The current meaning is a phonetic loan.
《說文》：“冥，幽也。从日，从六，冖聲。日數十，十六日而月始虧，幽也。”
to give birth to a child