'Earthstar' definitions:

Definition of 'earthstar'

From: WordNet
noun
Any fungus of the family Geastraceae; in form suggesting a puffball whose outer peridium splits into the shape of a star

Definition of 'Earthstar'

From: GCIDE
  • Earthstar \Earth"star`\, n. (Bot.) A curious fungus of the genus Geaster, in which the outer coating splits into the shape of a star, and the inner one forms a ball containing the dustlike spores. [1913 Webster]