Synonyms for first-base

Noun

1. first base, base, bag

usage: the base that must be touched first by a base runner in baseball

2. first base, first, position

usage: the fielding position of the player on a baseball team who is stationed at first base

3. first base, first step, initiative, opening move, opening

usage: the initial stage in accomplishing something; "we didn't get to first base with that approach"