1 definition by xUnknown1337x
Proper noun. Umbay is the last name of a family. It's origins are unknown, some people say it came from space. It means Lord. People with this last name are very intelligent. People with this last name usually become very successful and legends. People with this last name keep a big secret that no one knows and many don't know about.
by xUnknown1337x December 2, 2013