Other forms: plaques
A plaque is a flat plate with an inscription, or the film that forms on teeth. A blue plaque, unveil the plaque, remove the plaque.
London's blue plaques mark where notable people lived, and the rules are strict: the person must be dead twenty years. The dental sense is a film of bacteria that hardens into tartar if it is not brushed off, and arterial plaque is a third thing again.
1nounplaqueA flat plate with an inscription.
“A bronze plaque on the wall records the day the school was opened.”
2nounfilmThe film that forms on teeth.
“Brush your teeth twice a day to stop plaque from building up.”
plaque is a plate, or a film.
French plaque comes from Middle Dutch placke, a flat disc or patch.
French
plaque — plate, sheet (of metal); slab (of marble); bacteria on teeth
English, today
plaque
Built from
French plaque (“plate, sheet (of metal); slab (of marble); bacteria on teeth”), from French plaquer, Middle French 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 plaggą (“patch”). The word is cognate with Middle Low German placke, plagge (“small stain, scraps, rags, thin grass”), German Placken (“spot, patch”), stq plak, plakke (“a blow, slap”), Swedish plagg (“clothing, garment”). Compare plack.
Etymology from Wiktionary, CC BY-SA