Definition of 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!
Seen and Heard
What made you want to look up look through? Please tell us where you read or heard it (including the quote, if possible).