Erratic

Definitions

1. A rock moved from one location to another, usually by a glacier.
2. Anything that has erratic characteristics.

Equivalents

Examples

“The term for a displaced boulder is an erratic, but in the nineteenth century the expression seemed to apply⟳ more often to the theories than to the rocks.”

“During the last⟳ ice-age, massive stones were carried for miles by the scouring glaciers, only to be left, like⟳ passengers at the end⟳ of the line, when the glaciers retreated. Stranded in their new surroundings with rocks with which they share⟳ no common geology, their out-of-place-ness is evoked by their name⟳: “erratics”.”

CEFR level