insole

[ in-sohl ]
/ ˈɪnˌsoʊl /

noun

the inner sole of a shoe or boot.
a thickness of material laid as an inner sole within a shoe, especially for comfort.

Origin of insole

First recorded in 1850–55; in + sole2

Words nearby insole

insofar, insofar as, insol., insolate, insolation, insole, insolence, insolent, insolubilize, insoluble, insolvable

British Dictionary definitions for insole

insole
/ (ˈɪnˌsəʊl) /

noun

the inner sole of a shoe or boot
a loose additional inner sole used to give extra warmth, comfort, etc