First-base meaning
The first stage or step toward completion or success.
noun
The base to the left of the pitcher, the first of the four bases that a base runner attempts to reach safely.
noun
The defensive position played by the first baseman.
noun
(singular only, by extension) Completion of the first phase of an activity.
noun
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(singular only, US, colloquial) Kissing.
noun
get to first base
- To accomplish the first step of an undertaking, often, specif., a romantic or sexual one.
idiom