1 on the wall
ADJ. commemorative, memorial
VERB + PLAQUE put up The local historical society put up a plaque at the site of the battle. | unveil
PLAQUE + VERB be dedicated to sb, commemorate sb/sth, honour sb | mark sth, record sth A plaque marks the place where the first printing press was built.
PREP. on a/the ~ Some Latin words were engraved on the plaque. | ~ on a plaque on the wall | ~ to There is a commemorative plaque to the artist in the village hall.
2 substance on teeth
VERB + PLAQUE remove
PLAQUE + VERB accumulate, build up