Eaglestone
Pronunciation : Ea"gle*stone
Part of Speech : n.
Definition : Defn: A concretionary nodule of clay ironstone, of the size of a walnut or larger, so called by the ancients, who believed that the eagle transported these stones to her nest to facilitate the laying of her eggs; a?tites.
(Min.)
Source : Webster's Unabridged Dictionary, 1913