first base

American  

noun

1. Baseball.

   1. the first in counterclockwise order of the bases from home plate.

   2. the position of the player covering the area of the infield near first base.

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idioms

1. get to first base,

   1. to succeed in the initial phase of a plan or undertaking.

      His suggestions for labor-saving techniques never got to first base.

   2. to engage in petting that goes no further than kissing.

first base British  

noun

1. baseball

   1. the base that a runner must reach safely to score a hit, and the first of the three bases he must reach safely on the way to home plate in order to score a run

   2. the fielding position nearest this base

2. informal to accomplish the first step of an undertaking

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Etymology

Origin of first base

An Americanism dating back to 1835–45

Example Sentences

Jake Bauers of the Brewers reached base after Rays shortstop Ben Williamson made a throwing error, and Bucknor called Bauers out for failing to touch first base.

From Los Angeles Times • Apr. 1, 2026

The sun peaked for an inning while Aaron Ashby pitched and, from my position in the first base well, I was able to make a wide frame.

From BBC • Dec. 25, 2025

Not everyone is born on first base with the advantages of someone with family wealth and/or the means to pursue education and a high-paying career.

From MarketWatch • Dec. 18, 2025

As he pulled into first base, he clapped toward the dugout, then slapped his hands against his thighs in an outburst of relief.

From Los Angeles Times • Oct. 31, 2025

From my position on first base, I glanced behind me now and then.

From "Nine Stories" by J. D. Salinger