http://rd.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion/define.php?term=ref
Meaning, somebody else's work (homework) or a copy of it, to be copied and submitted as your own. Highly exceptable in IIT (Israeli Institute of Technologies , aka Technion) "Hey, do you have some ref on that shitty exercise ?