instep

From in- +‎ step.

• (US) IPA^(key): /ˈinˌstɛp/

• Audio (Southern England):

  (file)

instep (plural insteps)

1. (anatomy) The arched part of the top of the foot between the toes and the ankle.
2. A section of any footwear covering that part of the foot.
3. In horses, the hind leg from the ham to the pastern joint.

• metatarsus

• T-spine, nepits, pinest, septin, spinet, step in, step-in