derust verb 2noun 1forms 3 verb2 •To remove rust from (something).I'm going to derust the car this weekend. •(slang) To regain one's skills at a game after not having played for a while; to reverse the process of rusting.It's imperative we get 2 closed door matches under our belt in Qatar so we can derust in November. — 2022 noun1 •An instance of derusting (in either sense).Wrench Only wasn't too bad of a derust, since I was already really experienced with the category. — 2022 formsderusted · derusting · derusts