Artificial intelligent assistant

insole

insole
  (ˈɪnsəʊl)
  [f. in a. + sole n.]
  a. The inner sole of a shoe or boot. b. A flat piece of warm or waterproof material laid inside the shoe.

1851–61 Mayhew Lond. Labour II. 34 The soles, if there be a sufficiency of leather, are shaped into insoles for children's shoes. 1880 Times 21 Sept. 4/4 Light boots and slippers, called pumps, which have only one sole and no insole. 1890 Star 18 Jan. 4/4 Sliced cork is used for insoles.

Oxford English Dictionary

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