ironstone nodule

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• nodule — /noj oohl/, n. 1. a small node, knot, or knob. 2. a small, rounded mass or lump. 3. Bot. a tubercle. [1590 1600; < L nodulus a little knot, equiv. to nod(us) NODE + ulus ULE] * * * In geology, a rounded mineral concretion that is distinct from,… …   Universalium

• eaglestone — ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun : a concretionary nodule of clay ironstone about the size of a walnut that the ancients believed an eagle takes to her nest to facilitate egg laying * * * /ee geuhl stohn /, n. a concretionary lump of ironstone about the size… …   Useful english dictionary

• Eaglestone — Ea gle*stone, n. (Min.) 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[ e]tites.… …   The Collaborative International Dictionary of English