迷子まいご石いし

noun

glacial erratic; erratic boulder

Geological term for a rock that differs from the native bedrock and was transported by glacial ice.

See also: 漂石

• この迷子まいご石いしは氷ひょう河がによって遠とおくから運はこばれてきた。

  This glacial erratic was carried from afar by a glacier.