The acronym "RBI" stands for "Runs Batted In" in baseball, but there are various synonyms used by fans and players alike. Some of the synonyms include "runs driven in," "run producers," "RBI leaders," and "run makers." These terms refer to an offense statistic that tracks how many times a player successfully hits the ball and allows a teammate to score a run. RBI is an important metric used to evaluate a player's performance and contribution to a team's success. Other similar terms used in the sport include "runs scored" and "batting average," which are also essential measures of a player's performance at the plate.