Definition of "plaque" []

• A flat plate, slab, or disk that is ornamented or engraved for mounting, as on a wall for decoration or on a monument for information. (noun)
• A small pin or brooch worn as an ornament or a badge of membership. (noun)
• Pathology A small disk-shaped formation or growth; a patch. (noun)
• A deposit of fatty material on the inner lining of an arterial wall, characteristic of atherosclerosis. (noun)
• A scaly patch formed on the skin by psoriasis. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He pointed to the empty space on the door where a name plaque should be."
• "The piece is created by following a simple set of instructions, stated adjacent to the art on the title plaque:"
• "And that is a powerful drug that can get in there and can break up what we call plaque, it's stuff that is clogging up arteries, whether it's an artery to a heart that's causing an heart attack or an artery to the brain that's causing a stroke."