sponge rubber

noun
  1. a light, spongy rubber, usually prepared by bubbling carbon dioxide through or whipping air into latex, used for padding, insulation, gaskets, etc.; foam rubber.

Origin of sponge rubber

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sponge rubber

Historical Examples of sponge rubber

  • His gait was a little awkward, in spite of the sponge-rubber floor, because of the huge flowered carpetbag he was carrying.

    The Foreign Hand Tie

    Gordon Randall Garrett