terneplate definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
steel plate coated with an alloy of lead and a small amount of tin
Origin: French terne, dull (; from Old High German tarni, hidden) plush plate
terneplate definition by American Heritage Dictionary
Sheet iron or steel plated with an alloy of three or four parts of lead to one part of tin, used as a roofing material.
Origin: Probably French terne, dull (from Old French; see tarnish) + plate.