- (usually plates)short for license plate.the car had Vermont plates
- Geology each of the several rigid pieces of the earth’s lithosphere that together make up the earth’s surface. See also plate tectonics.
- Baseballshort for home plate.
Middle English (denoting a flat, thin sheet, usually of metal): from Old French, from medieval Latin plata 'plate armor', based on Greek platus 'flat'. sense 1 of the noun represents Old French plat 'platter, large dish', also 'dish of meat', noun use of Old French plat 'flat'