noun
1. : a stone arrowhead
2. : any of various concretions and fossils of odd or fantastic shape: as
a. : a staurolite crystal
b. : a fossil sea urchin
noun
1. : a stone arrowhead
2. : any of various concretions and fossils of odd or fantastic shape: as
a. : a staurolite crystal
b. : a fossil sea urchin
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012