Is “Plaques” a Scrabble word?

1.Any flat, thin piece of clay, ivory, metal, etc., used for ornament, or for painting pictures upon, as a dish, plate, slab, etc., hung upon a wall; also, a smaller decoration worn by a person, such as a brooch.

2.A piece of flat metal with writing on it, attached to a building, monument, or other structure to remind people of a person or an event.

3.A small card representing an amount of money, used for betting in casinos; a sort of gaming chip.