Plaque definition
Sticky white stuff on your teeth with bacteria in it is an example of plaque.
A little brass plate with the name of a donor on it that is attached to a bench the donor paid for is an example of a plaque.
Other Word Forms
Noun
Origin of plaque
- French from Old French metal plate perhaps from Middle Dutch placke disk, patch
From American Heritage Dictionary of the English Language, 5th Edition
- Borrowing from French plaque, derivative of plaquer (“to plate"), from Middle Dutch placken (“to patch, beat metal into a thin plate"), from placke (“disk, patch, stain"), from Old Dutch *plagga (“patch"), from Proto-Germanic *plaggÄ… (“patch"). Cognate with Middle Low German placke, plagge (“small stain, scraps, rags, thin grass"), German Placken (“spot, patch"), Eastern Frisian plak, plakke (“a blow, slap"), Swedish plagg (“clothing, garment"). See plack.
From Wiktionary