instep

n (a) upper surface of the human foot between the toes and the ankle 脚背. =>illus at foot 见 foot 插图. (b) part of a shoe, etc covering this （鞋等的）覆盖脚背的部分; 鞋面. =>illus at shoe 见 shoe 插图.

inspire, inspired, inspiring, Inst, instability, instable, install, install (US also instal), installation, installment, instalment, instalment plan, instance, instant, instantaneous, instantaneously, instantly, instate, instead, instead of, instigate, instigation, instigator, instil (US instill), instill, instillation, instinct, instinctive, instinctively, institute, institution, institutionalize, instruct, instruction, instructional, instructions, instructive, instructively, instructor, instrument,