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1. the inner sole of a shoe or boot.
2. a thickness of material laid as an inner sole within a shoe.
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|Noun||1.||innersole - the inner sole of a shoe or boot where the foot rests|
boot - footwear that covers the whole foot and lower leg
shoe - footwear shaped to fit the foot (below the ankle) with a flexible upper of leather or plastic and a sole and heel of heavier material
sole - the underside of footwear or a golf club