noun, する verb
If you look to your armpit to see you're looking away from where you should be looking. If you're too busy staring at your armpit while you drive, for example, you'll probably get in an accident. So don't look away like this!
The reading is the reading you learned with 脇 and the reading for 見る.
Ouch. Watch where you’re going! Don’t look away while you’re walking!