Definition
To permit someone to continue onward, e.g. through a security checkpoint, after verifying their identity, tickets, etc.
To inspect something, often to try to find errors, problems, etc.
How People Actually Use It
The number of girls you have to get through on dating apps/sites to find someone worth dating
"Matt: Having a hard time finding normal girlfriend material on Tinder Sticky: You should try Match.com, the Chick Through Rate is probably better"
Source: Urban Dictionary