Noun has 3 senses

• first base(n = noun.artifact) - the base that must be touched first by a base runner in baseball;


• first base(n = noun.act) first - the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate);



• first base(n = noun.act) - the initial stage in accomplishing something; "we didn't get to first base with that approach"