In Jain Dharma, yoni means a type of birth or life-form through which a soul takes birth.

It refers to the mode of embodiment of a jiva, such as birth in:

• egg-born
• womb-born
• sweat-born
• spontaneously generated

In a wider Jain sense, it is also used to describe the class of beings or species in which a soul is born, according to its karma.

If you want, I can also explain yoni according to Jain scriptures in simple words.