placard UK /ˈplæk.ɑːd/US /ˈplæk.ɑɹd/noun 6verb 2forms 3 noun6 •a paper or cardboard sign with a printed or written message for the public to see, often carried by people at a protestHe brought out the placard, which was quite a work of art. It was nearly two feet long, printed on calendered paper, with a selection of colors so bright that they shone even in the moonlight. — 1905 •(historical) an extra metal plate fixed over the lower half of the breastplate or back plate of a suit of armor •(historical) A kind of stomacher, often adorned with jewels, worn in the fifteenth century and later. •the frame and woodwork around a door, often the door of a closet •(no longer used) a decree or other official statement that a ruler or government makes known to the publicAll placards or edicts are published in his name. — 1655 •(no longer used) official permission that a ruler or government gives someone to do something, a license verb2 •To affix a placard to, or mark with a placard nearby.The inner walls of the church were placarded with large mural tablets of copper, bearing engraved inscriptions celebrating the merits of old Heilbronn worthies of two or three centuries ago, […] — 1880 •To announce with placards. formsplacarded · placarding · placards