Plaque (noun)
Any flat, ornament, or for painting pictures upon, as a dish, plate, hung upon a worn by a person, such as a brooch.
Plaque (noun)
A piece of flat metal with writing on it, building, structure to remind people of a person or an event.
Plaque (noun)
A clearing in a bacterial lawn caused by a virus.
Plaque (noun)
In the Hornbostel–Sachs classification system: any flat, thin musical instrument.
“blown plaques”
“concussion plaques”
Plaque (noun)
A broad patch of surrounding tissue, especially a broad irritated]] patch on the skin.
Plaque (noun)
An abnormal material in or on an associated with disease.
“amyloid plaque”
“pleural plaque”
“senile plaque”
Plaque (noun)
An accumulation in artery walls made up of macrophage cells and debris containing lipids, (cholesterol and fatty acids), calcium, and connective tissue; an atheroma.
Plack (noun)
A coin used in the Netherlands in the 15th and 16th centuries. 15th-17th c.
Plack (noun)
A coin issued by James III of Scotland; also a 15th-16th century Scottish coin worth four Scots pennies. from 15th c.
Plaque (noun)
an ornamental tablet, typically of metal, porcelain, or wood, that is fixed to a wall or other surface in commemoration of a person or event.
Plaque (noun)
a sticky deposit on teeth in which bacteria proliferate
“plaque around gum margins can lead to gingivitis”
Plaque (noun)
a small, distinct, typically raised patch or region on or within the body resulting from local damage or deposition of material, such as a fatty deposit on an artery wall in atherosclerosis or a site of localized damage of brain tissue in Alzheimer’s disease.
Plaque (noun)
a clear area in a cell culture caused by the inhibition of growth or destruction of cells by an agent such as a virus.
Plaque (noun)
a flat counter used in gambling.
Plack (noun)
Scottish and English regional (northern). A small billon coin issued by James III of Scotland; (also) a small copper coin current in Scotland in the 15th and 16th centuries worth four Scots pennies. Now historical.