Definition: The hangar is a part of the trucks of a skateboard. The hangar is the triangular part in the middle that the axle and the kingpin run through, and the part that skaters grind on. They are shaped a little like clothes hangars.
In fact, it's the way the hangar gets ground down that the trick "grind" gets its name. Some skateboard truck companies make thier hangars out of softer metal, to make grinding easier, but not all.
Many years ago, there were companies that made plastic hangar covers called copers. The idea was that you would grind down the coper, instead of your hangars. There are still companies that make copers today - read a Lozin Coper review to find out more.
Examples:
"Jackson loves to grind, and his hangars are worn down almost flat."
