first base

noun

1
: the base that must be touched first by a base runner in baseball
2
: the player position for defending the area around first base
3
: the first step or stage in a course of action
plans never got to first base
first baseman noun

Examples of first base in a Sentence

a runner on first base She hit a ground ball to first base. He used to be a catcher, but now he plays first base.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sasser moved to first base and the outfield, but the mental burnout from wayward throws affected his hitting approach and his once-promising career became a shambles. Chuck Murr, Forbes, 12 Mar. 2025 He has just been asked to play out of position quite a bit — a little shortstop but mostly at first base. Kevin Acee, San Diego Union-Tribune, 12 Mar. 2025 But first base has a lot to do with the WAR having plummeted. Kevin Acee, San Diego Union-Tribune, 12 Mar. 2025 Both teams could be looking to add a star at first base. Zach Pressnell, Newsweek, 12 Mar. 2025 See All Example Sentences for first base

Word History

First Known Use

1848, in the meaning defined at sense 1

Time Traveler
The first known use of first base was in 1848

Browse Nearby Words

Cite this Entry

“First base.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/first%20base. Accessed 17 Apr. 2025.

Kids Definition

first base

noun
: the base that must be touched first by a base runner in baseball
also : the position of the player defending the area around first base

More from Merriam-Webster on first base

Last Updated: - Updated example sentences
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