In baseball, "second base" refers to one of the four bases on the field. It is located in the infield, positioned between first base and third base. Players aim to reach second base after hitting the ball and running from first base. It is a crucial point for advancing runners and scoring runs. In a broader context, "second base" can also refer to a stage in romantic relationships. It typically involves physical intimacy, such as kissing and touching, but does not include sexual intercourse. This term is part of a larger metaphorical framework that describes different levels of physical affection.