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

Crow-Armstrong uncorked a 92.5-mph throw to nail a tagging-up Josh Naylor at third base that Gage Workman caught on the fly and got down the tag for the final out of the inning. —Meghan Montemurro, Chicago Tribune, 30 Mar. 2025

Machado then grounded a ball inside the bag at third for a double that scored Tatis, who had gone to second on a wild pitch and third base on Arraez’s sacrifice. —Kevin Acee, San Diego Union-Tribune, 28 Mar. 2025

Offseason acquisition Jonathan India (via trade) will start at third base and bat leadoff, followed by Bobby Witt Jr. (shortstop), Pasquantino (DH) and Salvador Perez (catcher). —Scott Chasen, Kansas City Star, 27 Mar. 2025

The second rule change involves when a runner runs through second or third base. —Julia Andersen, CNN Money, 27 Mar. 2025

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