The argument from repetition is when a discussion has been had so many times, or a participant in a discussion repeats the same point over and over again, neglecting that other participants have either proven the point wrong or have conceded the debate. This is a form of “beating them into submission” and reminds me of a quote by Nazi Germany’s propaganda minister Joseph Goebbels:
“If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and/or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State.”
The goal of this tactic, is to exhaust your opponent into conceding the argument, because they get sick of being told the same thing over and over. The danger here, is that a person will engage in it to make their definitions carry over into the main debate, when they are hotly contested.