\Pla*card"\, n. [F., fr. plaquer to lay or clap on,
plaque plate, tablet; probably from Dutch, cf. D. plakken to
paste, post up, plak a flat piece of wood.]
1. A public proclamation; a manifesto or edict issued by
   authority. [Obs.]
         All placards or edicts are published in his name.
                                               --Howell.
2. Permission given by authority; a license; as, to give a
   placard to do something. [Obs.] --ller.
3. A written or printed paper, as an advertisement or a
   declaration, posted, or to be posted, in a public place; a
   poster.
4. (Anc. Armor) An extra plate on the lower part of the
   breastplate or backplate. --Planch['e].
5. [Cf. {Placket}.] A kind of stomacher, often adorned with
   jewels, worn in the fifteenth century and later.

\Pla*card"\, v. t. [imp. & p. p. {Placarded}; p. pr. &
vb. n. {Placarding}.]
1. To post placards upon or within; as, to placard a wall, to
   placard the city.
2. To announce by placards; as, to placard a sale.