1) Bass liner 2) Boot segment 3) Buglossidium privatum 4) Comfort enhancer 5) Insole 6) It may be underfoot 7) Loafer liner 8) Mule part 9) Shoe part 10) Sneaker insert 11) Sole 1) Insole 
insole, innersole 1. The inner sole of a shoe or boot. 2. A thin removable liner placed inside a shoe to make it warmer or more comfortable or to prevent the buildup of odor. 3. Etymology: 'bottom of the foot' c.1325, from Old French sole, from Latin solea, 'sandal, bottom of a shoe'; from solum, 'bottom, ground, soil'.