Definition: [verb] spread over or occupy (a place) in large numbers.
Example: the Mediterranean has been overrun by tourists
Definition: [verb] continue beyond or above an expected or allowed time or cost.
Example: he allowed the match to overrun by 2 minutes
Definition: [noun] an instance of something exceeding an expected or allowed time or cost.
Example: the cost overrun caused the company's share price to fall
Definition: [noun] the movement or extension of something beyond an expected or allotted position.
Example: the system acts as a brake to prevent cable overrun
Definition: [noun] the movement of a vehicle at a speed greater than is imparted by the engine.
Example: the engines have overrun fuel cut-off