It was a small plaster plaque, the kind sold in cheap gift shops.
Then Roark’s arm went back and up, over his head, slowly, as if gathering the weight of air in the crook of his elbow; it was only a flash, but it seemed to last for minutes, the arm stood lifted and still—then it slashed forward, the plaque shot across the room and burst to pieces against the wall.
There are no more uses of "plaque" in the book.
Show samples from other sources
His scarcely revived memories couldn’t quite grasp what it meant, but he’d first seen it on the metal plaque back in the Maze, the one that had spelled out the words that made up WICKED’s acronym.
James Dashner -- The Scorch Trials
A plaque beside the door declared that the space was actually titled the Newsome Library, but I’d never heard anyone call it by that name except for Mom on occasion.