milk-secreting organ of female mammals
"The doctor explained that a lactating woman's mamma is responsible for producing nourishment for her newborn."
The milk-secreting organ of female humans and other mammals which includes the mammary gland and the nipple or teat; a breast; an udder.
"When I was a toddler, my favorite person to cuddle up with after dinner was always mamma."
Alternative spelling of mama: mother.