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.
With the Cubs' current platoon situation at first base with Michael Busch and Justin Turner, Chicago would gladly take Goldschmidt's production against left-handers over Turner's. Andrew Wright, MSNBC Newsweek, 5 June 2025 The Yanks did have a chance to score in the sixth after Ortiz started the inning with a walk, but two challenges at first base went against them. Gary Phillips, New York Daily News, 5 June 2025 The Sox had Elko at first base and moved Miguel Vargas back to third for Wednesday’s game against the Tigers. Lamond Pope, Chicago Tribune, 4 June 2025 Back in the lineup for the first time since last Wednesday, Mookie Betts singled with one out and scored from first base when Freeman doubled into the right-field corner – showing no ill effects from the fractured toe that had sidelined Betts for four games. Bill Plunkett, Oc Register, 4 June 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 8 Jun. 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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