Placard

Origin

Middle English placquert, 'official document,' from Middle French placquier, 'to plate'. Cognate of 'plaque' (1560)

Full definition of placard

Noun

1. A sheet of paper or cardboard with a written or printed announcement on one side for display in a public place.
2. (obsolete) A public proclamation; a manifesto or edict issued by authority.
• HowellAll placards or edicts are published in his name.
3. (obsolete) Permission given by authority; a license.to give a placard to do something
4. (historical) An extra plate on the lower part of the breastplate or backplate of armour.
5. (historical) A kind of stomacher, often adorned with jewels, worn in the fifteenth century and later.

Verb

1. To affix a placard to.
2. To announce with placards.to placard a sale