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base bullion

American  

noun

Metallurgy.

  1. smelted lead containing impurities, as gold, silver, or zinc, that are later removed.

Example Sentences

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It was obvious that the ingot was base bullion, and on the face of the affair there was clear proof that the Tartar had sold it. 

From Travels in Tartary, Thibet, and China During the years 1844-5-6. Volume 1 [of 2] by Huc, Evariste Regis

Alloyed with inferior metal; debased; as, base coin; base bullion.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah

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.