What does "Zip" mean?
Definition: One ounce of weed. An ounce is the equivalent of 28 grams or 1/16th of one pound mass. The word refers to a Zip-lock brand sandwich bag, which is the usual packaging for a zip of cannabis.
Example usage for Zip
"Man we need to quit smoking so much, yesterday this bag looked like a zip and now it looks like an eighth."