slipsole

English

Etymology

slip +‎ sole

Noun

slipsole (plural slipsoles)

1. A sock-like lining for the inside of a shoe.
   • 1943, War Department Technical Manual, volume 10, number 265, page 36:

     The slipsole is examined to determine whether it must be replaced or whether a patch is sufficient. Shoes which are worn through the bottom filler and/or innersole cannot be economically repaired.