Definitions
1.nounA sheet of paper or cardboard with a written or printed announcement on one side for display in a public place.
2.nounA public proclamation; a manifesto or edict issued by authority.
3.nounPermission given by authority; a license."to give a placard to do something"
4.nounAn extra plate on the lower part of the breastplate or backplate of armour.
5.nounA kind of stomacher, often adorned with jewels, worn in the fifteenth century and later.
6.nounThe woodwork and frame of the door of a closet etc.
7.verbTo affix a placard to.
8.verbTo announce with placards."to placard a sale"