Earthstar definitions

ûrth'stär'
Any of various mushrooms of the family Geastraceae, having a round spore case like that of a puffball with an outer covering that splits open in a starlike form.
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Any of a family (Geastraceae) of puffball fungi, in which the outer wall of the spore fruit splits into a starlike form surrounding the spore sac.
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A type of puffball, of genus Geastrum, whose surface splits open in a star-shaped form.
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Origin of earthstar

earth +‎ star