Placard \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. [1913 Webster] 2. To announce by placards; as, to placard a sale. [1913 Webster]