puffball

Any of various fungi, usually globose, that produce a cloud of brown dust-like spores from their mature fruiting bodies, especially in family Lycoperdaceae.

Any of various mushrooms with globose fruiting bodies.

A dandelion flower that has gone to seed, a dandelion clock.

Something lacking substance.

Scads of souls thought the record was yet another puffball from ex-Beatle Paul.