For the past several days, I've been talking about my stash and how I need to get it inventoried and under control. So it seemed prudent to add the term to my glossary:
Stash: A collection of fibers in any form that go beyond the needs of a single project. If you buy just enough yarn or fiber for one project at a time, then you don't have a stash. I would even say that if you could use up all of your yarn & fiber within six months, then you don't have a stash. If you have enough yarn or fiber to last until the zombie apocalypse, then you have a stash. If the mass of your stored fiber outweighs you, then you have a stash. If you've considered who should inherit your fiber after you die, then you have a stash.