Existence in which one is born from a womb. This is one of four types of birth listed in treatises such as the Abhidharmakośa: (1) birth from a womb (mammals, human beings), (2) from an egg (birds, reptiles, fish, etc.), (3) from heat and moisture (maggots, etc.), (4) and spontaneous or miraculous birth (gods, pretas, hell beings, intermediate state beings, etc.).