A thin plate or scale; a layer or coat lying over another; -- said of thin plates or platelike substances, as of bone or minerals.
- A thin plate, sheet, or layer.
- Botany The expanded area of a leaf or petal; a blade.
- Botany The bladelike part of a kelp.
- A thin layer of bone, membrane, or other tissue.
- Zoology A thin scalelike or platelike structure, as one of the thin layers of sensitive vascular tissue in the hoof of a horse.
- Geology A narrow bed of rock.