look through

1 :  to read or briefly examine some of the pages of (a book, magazine, etc.) She was looking through a magazine as she waited in the doctor's office.

2 :  to look at the different parts of (a collection or group of things) I looked through all his letters.

3 :  to place one's eyes so as to see through (something) look through a telescope

4 :  to pretend not to see or recognize (someone) in a rude or unfriendly way We used to be best friends but when she passed me on the street yesterday she looked (right/straight) through me without even saying hello!