in·step 
(ĭnstĕp′)
(ĭnstĕp′)n.
1. The arched middle part of the human foot between the toes and the ankle.
2. The part of a shoe or stocking covering the instep.
[Middle English.]
- get one's teeth into
- get on high horse
- get on nerves
- get on one's high horse
- get on (someone's) nerves
- get on someone's nerves
- get on the stick
- get on with
- get (or have)the better of
- get (or have) the better of
- get out
- get out of
- get over
- get/put it all together
- get religion
- get rid of
- get shit together
- get/sink (one's) teeth into
- get (someone's) goat
- get someone's goat
- get someone's number
- get something off chest
- get (something) off (one's) chest
- get something off one's chest
- get somewhere