Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “first base”

first base

noun [C usually singular]    
in baseball, the first of four places you must run to after hitting the ball and before scoring a point, or the position of a player defending this place: Mattingly played first base for the Yankees.Baseball and roundersGeneral terms used in ball sports
(Definition of first base noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of first base

Definitions of “first base” in other dictionaries

Translations of “first base”

Word of the Day

sail

When a boat or a ship sails, it travels on the water.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More