blade
1.
2.
3. A dashing youth.
4. A flat, thin part or section: the blade of an oar; the blade of a food processor.
5. The metal runner of an ice skate.
6. A wide flat bone or bony part.
7. The flat upper surface of the tongue just behind the tip.
8. Botany. The expanded part of a leaf or petal. The term is often loosely used to include the entire leaf of grasses and similar plants.
[Middle English, from Old English
blad