A black actor who was once known as a good artist, whether it be a good comedian, musician, or movie actor, that has now become recognized as a talentless hack who keeps regurgitating shitty movies. Eddie Murphy, Martin Lawrence, and Ice Cube would all be categorized as blactors.
"Eddie Murphy is the worst blactor I've ever seen!"
"Remember when Martin Lawrence made decent movies? Now he's just a no talent blactor."