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sandwich coin

American

noun

a coin having a layer of one metal between outside layers of another, as a quarter with a layer of copper between layers of silver.

Etymology

Origin of sandwich coin

First recorded in 1960–65

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.