If you're looking for a specific Hindi term for a newborn baby, you could use:
* Shishu (शिषु): This is a more formal word for a baby.
* Bachcha (बच्चा): This is a general term for a child, but it can be used for a baby.
* Nanha (नन्हा) or Nanhi (नन्ही): These are terms for a little or tiny baby, usually used affectionately.
* Balak (बालक) or Balika (बालिका): These are terms for a boy and girl child, respectively.
You can also use terms like "ladka" (boy) or "ladki" (girl) to refer to a baby.
Ultimately, the best way to refer to a baby in Hindi is to use the term that feels most natural and appropriate to you!