1. (n.) A public proclamation; a manifesto or edict issued by authority.

2. (n.) Permission given by authority; a license; as, to give a placard to do something.

3. (n.) A written or printed paper, as an advertisement or a declaration, posted, or to be posted, in a public place; a poster.

4. (n.) An extra plate on the lower part of the breastplate or backplate.

5. (n.) A kind of stomacher, often adorned with jewels, worn in the fifteenth century and later.

6. (v. t.) To post placards upon or within; as, to placard a wall, to placard the city.

7. (v. t.) To announce by placards; as, to placard a sale.

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