instep
US /ˈɪn.step/
UK /ˈɪn.step/

1.
wreef
the part of a person's foot between the toes and the ankle, where the arch is highest
:
•
He kicked the ball with the instep of his foot.
Hij schopte de bal met de wreef van zijn voet.
•
The shoe was too tight across the instep.
De schoen zat te strak over de wreef.