instep

US /ˈɪn.step/
UK /ˈɪn.step/
"instep" picture
1.

脚背

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.
他用脚踢球。
The shoe was too tight across the instep.
这双鞋在脚处太紧了。