Dictionary.net

• an earthball with a peridium that is firm dry and smooth when young but developing cracks when mature; pale orange-yellow when young and reddish brown at maturity

2006 - WordNet 3.0
By Princeton University

• an earthball with a peridium that is firm dry and smooth when young but developing cracks when mature; pale orange-yellow when young and reddish brown at maturity

2011 - English Dictionary Database
By DataStellar Co., Ltd