flat back
Americannoun
-
a book spine presenting a completely flat surface.
-
a book bound with such a spine.
Etymology
Origin of flat back
First recorded in 1900–05
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Others felt it was slight, until Lisandro Martinez came on for Leny Yoro in the second-half and United definitely reverted to a flat back four.
From BBC ● Dec. 15, 2025
Another option is to use a type of channel shaped like quarter-round molding, with a flat back and base at a right angle and a curved piece connecting the two.
From Washington Post ● Aug. 8, 2021
He would sacrifice Neil Taylor, much to the Wales international’s disgust, and revert to a flat back four before the interval but by then the team were playing catch-up.
From The Guardian ● Sep. 11, 2016
Every instinct I have tells me to turn the rounded front to my palm and the flat back to my face — because nearly every smartphone to date has been thus designed.
From The Verge ● Mar. 31, 2015
It was about shoulder height to her, with a flat back.
From "Homecoming" by Cynthia Voigt
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.