Short for vaporizer pen. A vape pen is a compact and more portable version of a vaporizer. The typical uses are pre-filled cartridges of cannabis extract. The cartridges come in various strains, flavors and sizes. The vape pen is very popular amongst marijuana users beacuse of its portability and discreetness. One of the other attarctive features is the lack of marijuana odor, making consuming marijuana in public the perfect option for smokers.