Longman Dictionary of Contemporary English homepage

Topic: ILLNESS AND DISABILITY

Date: 1800-1900
Language: French
Origin: Dutch plak, from plakken 'to stick'

plaque

 noun
     
plaque
1 [countable]TB a piece of flat metal, wood, or stone with writing on it, used as a prize in a competition or attached to a building to remind people of an event or person:
The team's coach was given a plaque.
commemorative plaque (=a plaque to help people remember something important)
2 [uncountable]MI a harmful substance which forms on your teeth, which bacteria can live and breed in
Definition of plaque from the Longman Dictionary of Contemporary English within
the topic ILLNESS AND DISABILITY
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