"Two-bagger" is a baseball term that refers to a hit that allows the batter to reach second base. There are several synonyms for this term in baseball slang, including "double," "two-base hit," and "two." Other terms that are sometimes used include "two-sacker," "two-base knock," and "two-base hit job." While these terms are specific to baseball, there are also several synonyms for "two-bagger" that are more broadly applicable. These include "pair," "couple," "duo," and "twosome." Whether you're talking about baseball or everyday life, there are plenty of ways to express the concept of two things that go together.