Definition of base-running in English:

base-running

(also baserunning)

noun

Baseball

See base runner

‘Like Gross, first baseman Vic Power was no base-running dynamo during his career, with just 34 stolen bases in 12 seasons, yet is among only 11 players to steal home twice in a game.’
  • ‘But the Pirate catcher committed an uncharacteristic base-running mistake.’
  • ‘There's no fielding, no base-running, not even the chance of an error.’
  • ‘‘There are a lot of reasons for players not stealing bases,’ said Houston Astros outfielder Willy Taveras, among the National League's leading base-running thieves this season.’
  • ‘Worry that Tejada will overplay too many balls, overrun bases, like the kind of overaggressive base-running blunder that helped cost the A's a trip to the AL Championship Series last year?’