to run - a) to go by moving the legs rapidly, faster than in walking; b) to go rapidly; to move swiftly; c) to go or pass as per schedule or in a normal way; d) (a machine, watch, vehicle etc.) to function or be in operable condition; e) (a business, affair, commercial enterprise, industry, etc.) to function or keep functioning; f) (time, day, etc.) to elapse; g) (musc.) to be sung or played in a faster tempo; h) (a drama, cinema etc.) to be or continue to be, on the show; to be or continue to be exhibited; h) (one's intelligence) to work, to be active.