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sidewall

American

[sahyd-wawl] / ˈsaɪdˌwɔl /

noun

the part of a pneumatic tire between the edge of the tread and the rim of the wheel.
a wall that serves as the side of a structure.
the side part of the upper of a shoe.

sidewall British

/ ˈsaɪdˌwɔːl /

noun

either of the sides of a pneumatic tyre between the tread and the rim

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of sidewall

Middle English word dating back to 1350–1400; see origin at side ¹, wall

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.

See Examples For:

sidewall

Sonny and Chloe call each other “Bobo,” and in a nice, authentic touch we see he has written that nickname in ballpoint pen on the white sidewall of his sneaker.

From Los Angeles Times ● Oct. 19, 2026

A statement by governing body the FIA said Pirelli had noticed "a separation in the sidewall" when they checked tyres on Friday.

From BBC ● Oct. 7, 2023

Heavy and overloaded vehicles in extreme heat are particularly susceptible to sidewall blowouts, according to Chicago-based United Tires, a nationwide used-tire seller.

From Scientific American ● Aug. 18, 2023

The recommended pressure stamped into every tire’s sidewall, is a rough guideline.

From Washington Post ● May 9, 2022

Mr. Hoo joined his son at the glass sidewall of the fifth-floor restaurant.

From "The Westing Game" by Ellen Raskin

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023