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

Caminero also will be the 14th player to start back-to-back All-Star games in his age 22 (or younger) season, and the first to do so at third base. — Marc Topkin, The Orlando Sentinel, 5 July 2026

Muncy is set to be the first Dodger to start the All-Star Game at third base since Ron Cey in 1977. — Maddie Lee, Los Angeles Times, 5 July 2026

After Jose Altuve scored from third base when Isaac Paredes grounded into a double play in the first inning, Bradley recorded 10 consecutive outs by strikeout. — CBS News, 2 July 2026

To boot, both Muncys started Monday’s game playing third base and hitting seventh in their respective lineups, reaching base twice apiece. — Sean Campbell, Sacbee.com, 1 July 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