Niece or nephew

[abc]

If my sister is pregnant and she will give birth to her child soon. And I don't know her baby is niece or nephew, so is there any word which means niece or nephew?

thanks

[Yankee]

Hi abc

No, there is no word for that.

Amy
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"Nearly all men can stand adversity, but if you want to test a man's character, give him power." ~ Abraham Lincoln

[Pamela]

It's better getting to know the sex of the child via ultrasound :D so that to define it's niece or nephew :lol: