D defs.my
Entry 1 sense Webster, 1913

Insole

· In·sole · IPA /ˈɪnsoʊl/
01 n. The inside sole of a boot or shoe; also, a loose, thin strip of leather, felt, etc., placed inside the shoe for warmth or ease.
  1. 1.
    The inside sole of a boot or shoe; also, a loose, thin strip of leather, felt, etc., placed inside the shoe for warmth or ease.