1.Attempting to reopen a topic or subject that is already resolved 2.To waste time doing something that has already been attempted
"If you're trying to get back with Ryan, you're just kicking a dead horse. He got back together with Becky."
by Single Mingling Pringle March 29, 2014
Teacher : Yeah check it out
Student : Ok I will
Teacher : Get it? Check it out, for the chess tournament
Student : Your kicking the dead horse sir
Student : Ok I will
Teacher : Get it? Check it out, for the chess tournament
Student : Your kicking the dead horse sir
by NewfoundlandYeti October 19, 2009