third base

noun

1

: the base that must be touched third by a base runner in baseball

2

: the player position for defending the area around third base

third baseman noun

Examples of third base in a Sentence

a runner on third base

Recent Examples on the Web

DeRosa started Henderson at third base on Sunday over Alex Bregman because of Henderson’s history of success against the Dominican righty — Henderson was 7 of 9 with a home run and four RBI all-time versus Severino entering the game. —Jordan McPherson, Miami Herald, 16 Mar. 2026

Henderson, starting at third base over Alex Bregman, homered off Luis Severino to tie it in the fourth before Anthony hit the go ahead homer, connecting on a 3-2 sinker from loser Gregory Soto. —Dallas Morning News, 15 Mar. 2026

Gunnar Henderson will start at third base over Alex Bregman for the United States in Sunday's World Baseball Classic semifinal against the Dominican Republic, a decision that manager Mark DeRosa said was based on the pitching matchup against Luis Severino. —ABC News, 15 Mar. 2026

From there, Jordan worked another walk to fill the bases again, followed by Duer chopping the ball to third base, forcing the Sooners to make an errant throw, driving two more runs in. —Tony Catalina, Austin American Statesman, 13 Mar. 2026

Word History

First Known Use

1845, in the meaning defined at sense 1

Rhymes for third base

• abase
• airspace
• apace
• backspace
• biface
• birthplace
• blackface
• boldface
• bookcase
• braincase
• briefcase
• carcase

Kids Definition

third base

noun

: the base that must be touched third by a base runner in baseball or the position of the player defending the area around it