Plaque | Mean of plaque in English Dictionary

/ˈplæk/

• Noun
• a flat, thin piece of metal or wood with writing on it that is used especially as a reminder of something (such as a historic event or an achievement)
1. A bronze plaque marked the city's oldest building.
2. They gave him a plaque in honor of his 30 years of service.
• a thin coating that forms on teeth and contains bacteria
1. Brushing your teeth prevents the buildup of plaque.
• a change in brain tissue that occurs in Alzheimer's disease
1. The scientists are studying the way the plaques form.

• a harmful material that can form in arteries and be a cause of heart disease