1. (

• puffball ,
• true_puffball

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

2. (

• earthball ,
• false_truffle ,
• puffball ,
• hard-skinned_puffball

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