noun
inside the womb; in utero
Refers to the interior of a pregnant woman's uterus; used in medical, biological, and figurative contexts.
胎内で赤ちゃんが育つ。
The baby grows inside the womb.
胎内記憶についての研究がある。
There is research on prenatal memory.
noun
Specifically the hollow interior of a Buddhist statue, often where sacred objects or scriptures are enshrined.
仏像の胎内に経典が納められていた。
Sutras were enshrined inside the Buddhist statue.