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

But then what looked like a tap-in par on the long par-three eighth turned into a shocking miss. —Doug Ferguson, Los Angeles Times, 15 June 2025

In the Rockies’ eighth, Jordan Beck led off with a single up the middle off reliever Ryne Stanek, and Thairo Estrada followed with a double off the right-field wall. —Patrick Saunders, Denver Post, 6 June 2025

Jason Adam worked a 1-2-3 eighth, and Robert Suarez did the same in the ninth for his 17th save. —Kevin Acee, San Diego Union-Tribune, 25 May 2025

The Hawks rank eighth (24.8%) in power-play percentage but 18th in power-play goals (40). —Phil Thompson, Chicago Tribune, 21 Mar. 2025

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