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midsole

[mid-sohl]
noun
  1. a layer of material or cushioning between the outsole and the insole of a shoe.

Origin of midsole

mid- + sole2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for midsole

midsole

noun
  1. a layer between the inner and the outer sole of a shoe, contoured for absorbing shock
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