plac·ard 
/ˈplækɚd/ noun
plural plac·ards /ˈplækɚd/ noun [count] : a large notice or sign put up in a public place or carried by people
▪ The placard on the door says that the church was built in the late 1600s. ▪ protesters carrying placards
▪ The placard on the door says that the church was built in the late 1600s. ▪ protesters carrying placards
