puffball

noun4

1. •
   Any of various fungi, usually globose, that produce a cloud of brown dust-like spores from their mature fruiting bodies, especially in family Lycoperdaceae.
2. •
   Any of various mushrooms with globose fruiting bodies.
3. •
   (figurative) Something lacking substance.

   • Scads of souls thought the record was yet another puffball from ex-Beatle Paul. — 1990
4. •
   A dandelion flower that has gone to seed, a dandelion clock.