Noun

1. Any flat, thin piece of metal, clay, ivory, or the like, used for ornament, or for painting pictures upon, as a slab, plate, dish, or the like, hung upon a wall; also, a smaller decoration worn on the person, as a brooch.
2. an accumulation of bacteria on teeth
3. an accumulation of fat, usually cholesterol, in blood vessels
4. a clearing in a bacterial lawn caused by a virus

Noun

1. sheet, plate (of metal)
2. slab (of marble)
3. plaque (bacteria on teeth)
4. plaque, slab (ornamental)
5. (casino) chip
6. plate
7. plate (especially a tectonic plate)
8. slab, bar (of e.g. chocolate)
9. 10,000 francs

Verb