Sleveen is a rascal, an imp, a rapscallion. A character who’s more than likely to take any kind of advantage that he can find for himself, but not necessarily hurting those around him. I guess my first run-in with sleeveen it was used on me. I know you you could never tell that but it actually was. I found an opportunity, after dinner, to get to the cake plate while no one was looking. I did this a number of times but I remember mother catching me after a while. And I remember the roar from the pantry door – get out of here you little sleeveen. And I think that probably ties up the word pretty well. Someone who was gonna get his cake if he could possibly do it without getting caught.