eighth

noun

ˈātth 

ˈāth

plural eighths ˈāt(th)s 

ˈāths

1

: one that is number eight in a series

the eighth of the month

see Table of Numbers

2

: one of eight equal parts of something

one eighth of a pie

an eighth of a pound

3

: eighth note

4

: octave

He contrasted himself with Elton John, who complained that his chubby hands could only reach an eighth, which was a hindrance to his piano technique (though clearly he overcame the problem).

—Susan Wyndham

eighth adjective or adverb

the eighth person in line

the country's eighth largest city

Examples of eighth in a Sentence

one eighth of the pie

An eighth of a pound is two ounces.

Recent Examples on the Web

Muncy added his solo home run in the seventh and Freeman had another sacrifice fly in the eighth. —Doug Padilla, Oc Register, 31 May 2026

Third baseman Javier Sanoja pitched a perfect eighth. —Cbs New York Team, CBS News, 31 May 2026

Virginia Tech hit three — from Owen Petrich in the fifth, Ethan Gibson in the seventh and Ball in the eighth. —Joaquin Ruiz, Los Angeles Times, 30 May 2026

Minnesota's Kody Clemens hit a solo shot in the eighth. —ABC News, 27 May 2026

Word History

First Known Use

1557, in the meaning defined at sense 2

Phrases Containing eighth

• eighth note
• eighth rest

Kids Definition

eighth

noun

ˈātth 

plural eighths ˈāt(th)s 

: one that is number eight in a series see number

eighth adjective or adverb