pussy tightness retention, a common term used for females who have small vaginal orifices. They are generally more successful in keeping a spousal partner because of their coital abilities.
The common belief is that women with larger shoe sizes have better PTR. This is a scientifically investigated fact.
Damn, that chick I banged all last month definitely had PTR. I just fucked her last night and she was tight!
A short form of pointer when speaking about the C programming language. It can also be a nickname for someone called Peter, since when pronouncing the letters of "ptr" one and one, it almost sounds like Pe-te-r.
How do I create a ptr that points to the free memory heap?