placarder|pləˈkɑːdə(r), ˈplækədə(r)| [f. placard v. + -er1.] One who puts up placards. 1825Examiner 17/2 M'Donnell then asked for the name of some private placarder.1837Carlyle Fr.Rev. (1872) III. i. i. 8 Then Durosoy, Royalist Placarder,..went rejoicing.