Big Grandma

"Big grandma" is one of your two grandmothers who is the elder one. Big grandma could also be the great-grandmother.

(Think of it like "big brother; big sister" bigger as in older.)

My "big grandma" is my great-grandmother and she's older than my grandma.

by StrawberryRedHead July 30, 2011

big grandma

A baby mama's mama that is grandpaing baby mama sweet child.

Thats big grandma but don't tell little daddy

by BigMamaSweetAss November 20, 2007

Big C's Grandma

Legendary figure who killed hitler, bin laden, escobar. She castrated all of them, and kept their balls.

Big C's Grandma is legendary bro.

by Goonginator April 12, 2022