She told US TV presenter Nancy O'Dell: "He doesn't have that many words. He
says bye bye, bah bah and mama. That's his vocabulary right now."
The 48-year-old singer - who is sharing custody of the boy with husband Guy
Ritchie - also described the first time her two children, six-year-old Rocco
and Lourdes, nine - from Madonna's relationship with fitness instructor
Carlos Leon - met their new brother.
She said: "He arrived at 7 o'clock in the morning and the children were
getting ready for school. We were all in the kitchen and the door opened, it
was just really quiet and my nanny walked in carrying David and the children
just ran to him. Lola grabbed him and held him and it was just this strange
quiet moment. It was amazing."
Madonna also revealed that her daughter thought her new brother was a
birthday present, and was "bummed out" when she returned home from Malawi
without him.
She added: "She thought that was going to be her birthday present. So she
kept saying every day, 'Is David coming? When's he going to get here?'"

In other news, Madonna has sparked furious debate after adopting David Banda towards the end of her stay in the African country - and began to wonder why locals knew her name when they had no idea of her superstar status.

She says: "People started to say my name and they had never heard of Madonna. And, in Chichewa, the word 'madonna' means 'distinguished white lady', so I think they got very confused."