Miscellaneous cruft or garbage. Colorful Southern term for schmutz (Yiddish), crud (Yankee) or other
unwanted marks, spots or streaks on a copy. Sounds like a contraction of "gratuitous doodoo", not as dangerous as the "deep doodoo" that plagued George the First, but equally annoying. See gradeau
Computer language: The syntax is clean, except for this gradoo in the join statement.