(in Ireland and America) an affectionate word for ‘mother’ mostly used by children;
(an informal word, so not to be used in formal situations) an Afro-American (Black) woman whose job was to care for the white (Caucasian) children in the southern USA in the past,
It’s fun to hear a little toddler call its mother ‘mammy’ to mean ‘mummy’.
As is clear from several article written by Caucasian American writers as well as Afro-American writers, the life of a mammy, the African woman who looked after the white children in the slave era, had a better life than an ordinary woman slave.
There are different opinions among Americans as to how to treat mammies in the present scenario — one group says it’s racist to still talk about mammies and the other group counter argues that it’s history and there is nothing wrong in calling a spade a spade.