Millbourne \m(i)-llbour-ne, mil(l)-bou-rne\ as a boy's name is a variant of Milburn (Old English), and the meaning of Millbourne is "mill near the stream".
The baby name Millbourne sounds like Millburne, Milbourne and Millborne. Other similar baby names are Melbourne, Millburn, Milbourn, Millborn and Milborne.