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.

Origin of sidewall

Middle English word dating back to 1350–1400; see origin at side1, wall Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sidewall

Historical Examples of sidewall

  • Crowbar ready, Ken flattened himself against the sidewall, pulling his companion back with him.

  • It toppled and spilled half its contents on the cargo-hold floor, which had been a sidewall.

    Planet of Dread

    Murray Leinster

  • One reached these upper offices by a long walled passageway to the left, where the sidewall of the bank adjoins the McCall garden.

  • Farrow went over the back of the seat in a flurry and I rolled off of my stretcher into the angle of the floor and the sidewall.

    Highways in Hiding

    George Oliver Smith

  • He followed when she went to a doorway—with a security guard beside it—in the sidewall.

    Space Platform

    Murray Leinster

British Dictionary definitions for sidewall



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