Wiktionary
grandmammy
n. (context informal English) grandmother
Usage examples of "grandmammy".
Yes, mam, de Bill Greggs had a heap of slaves cause dey had my grandmammy en my granddaddy en dey had a heap of chillun.
The old cabin, with its rail floor and rail bedsteads upstairs, and its clay floor downstairs, and its dirt chimney, and windowless sides, and that most curious piece of workmanship dug in front of the fireplace, beneath which grandmammy placed the sweet potatoes to keep them from the frost, was MY HOME – the only home I ever had.