Niblingo

A woman pregnant with your future niece or nephew that is not related to you by law.
This word was used in “Young Sheldon”

That woman over there is my niblingo.

by SafSafSafa June 6, 2023

Niblingo

A goofy ahh word used to describe the woman you older under age brother filled with baby goo and is now pregnant.

Guy 1: Bro, my 17 year old brother creampied this random woman last night
Guy 2: Nah man that's your niblingo

by Epic Goober May 21, 2023

niblingo

the mother of one's niece/nephew

My niblingo bought me cookies .

by mellowskoj February 18, 2023