What does Rastus mean?
Rastus is an unusual given name for males and an unusual last name too for both adults and children. (2000 U.S. Census)
The only popular alternative form of Rastus (#unlisted) is Erastus. Adoption of these boy names was at its peak during the years 1880-1889 (usage of 0.402%) and is now much less. Below is a graphed analysis of the usage of Rastus and associated names. (Top 1000 Baby Names Statistics, 2014)
A recommended similar baby name is Rasmus. Like Rastus, this name is not commonly used.