From Longman Dictionary of Contemporary Englishhome runˌhome ˈrun noun [countable] DSBa long hit in baseball which allows the player who hits the ball to run around all the bases and get a point I didn’t think I could hit a home run.
Examples from the Corpus
home run• In one of the awful sports cliches politicians love so much, he had to hit a home run.• Such a blow was now a home run.• A home run by Mark McLemore in the fifth was the only dent Texas was able to lay on him.• In three-plus seasons, Piazza has averaged one home run for every 15. 8 at-bats.• It was a personal home run, but a fashion base hit.hit ... home run• In 1987, Mr Salvigsen again hit a home run when he forecast that interest rates would spike up.• He claimed that from the third inning he had the feeling he was going to hit a home run. 