also 'Rastus, masc. proper name, short for Erastus. As a stereotypical name of an American slave or derogatory for "black man," 1881, probably from use in stories of Joel Chandler Harris.
Examples from the Web for rastus
Rastus is going to be our Moses to lead us out of the wilderness, cried Fred gleefully.
I'm kinder like 'Rastus Bailey used to be at the dances when you and me was younger, Perez.Cap'n Eri|Joseph Crosby Lincoln
It was rather lucky for young Rastus here, commented the officer.
But youd better get down below, Rastus, and get some dry clothes on.
Unto him a half hour later came old 'Rastus with her invitation to dine.The Song of the Wolf|Frank Mayer