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eaglestone

[ee-guh l-stohn]
noun
  1. a concretionary lump of ironstone about the size of a walnut, formerly believed to be carried by eagles to their nests as a magical aid in laying eggs.

Origin of eaglestone

First recorded in 1595–1605; eagle + stone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for eaglestone

eaglestone

noun
  1. a hollow oval nodule of clay ironstone, formerly thought to have magical properties
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012