run-flat adjective 1noun 1forms 1 adjective1 •Of a pneumatic tire, designed to resist the effects of deflation when punctured, and to allow the vehicle to continue to be driven (although usually at a reduced speed). noun1 •A pneumatic tire designed to resist the effects of deflation when punctured, and to allow the vehicle to continue to be driven (although usually at a reduced speed). formsrun-flats
