PUFFBALL

earthball, false truffle, puffball, hard-skinned puffball

(noun) any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles

puffball, true puffball

(noun) any of various fungi of the family Lycoperdaceae whose round fruiting body discharges a cloud of spores when mature

Source: WordNet® 3.1

Etymology

Noun

puffball (plural puffballs)

Any of various fungi that produce a cloud of brown dust-like spores from their mature fruiting bodies.

Source: Wiktionary

Puff"ball`, n. (Bot.)

Definition: A kind of ball-shaped fungus (Lycoperdon giganteum, and other species of the same genus) full of dustlike spores when ripe; -- called also bullfist, bullfice, puckfist, puff, and puffin.

Source: Webster’s Unabridged Dictionary 1913 Edition