placard

noun
UK /ˈplæk.ɑːd/
US /ˈplæk.ɑːrd/

A placard is a sign you can hold up or put on a wall to show people something.

The fans held up a placard with the team's name on it.


OTHER MEANINGS

2. A small card or plate fixed to a wall or door to show a name or information.

A brass placard beside the door read 'Manager'.

3. To put up signs or posters in a public place, often to advertise or protest.

The students placarded the hallways with posters for the school play.

4. A sign carried by someone in a protest or march.

She raised her placard high so everyone could read the message.