1. One that rocks, as:

2. One of the two curved pieces upon which a cradle, rocking chair, or similar device rocks.

3. A cradle used for washing or panning ores.

4. A small curved blade with a toothed edge used in mezzotint engraving to roughen the surface of the metal plate.

5. An object having a curved form, as the keel of a ship or a skate blade sharpened in a curve.

6. A curved stripe at the bottom part of a chevron worn by noncommissioned officers above the rank of sergeant.

7. Music