Definition of eagle-stone in English:

eagle-stone

noun

historical
  • A hollow nodule or pebble of hydrated iron oxide containing a loose kernel that makes a noise when rattled, often regarded as having medicinal and magical properties.

Origin

Early 17th century; earliest use found in Philemon Holland (1552–1637), translator. From eagle + stone, after classical Latin āetītēs aetites.

Pronunciation

eagle-stone

/ˈiːɡlstəʊn/