home run

A four-base hit, allowing the batter to circle the bases and reach home safely in one play without any errors being committed by the defensive team.
A three-base hit, a legal hit where the batter gets to third base without stopping and without the opposing team attempting to put the batter out on earlier bases, scoring one run immediately.
(figuratively) The portion of a journey that ends at home.
(figuratively) A success, especially a popular success.
(colloquial) Sexual intercourse.
A connection from a central distribution point or circuit breaker to a destination.