| | - Jew's harp
- musical instrument consisting of a thin wood or metal tongue fixed at one end to the base of a two-pronged frame. The player holds the frame to his mouth, which forms a resonance cavity, and plucks the instrument's tongue. The ...
- Jewel Cave National Monument
- limestone caverns in southwestern South Dakota, U.S., 15 miles (24 km) west of Custer. Established in 1908, the monument occupies a surface area of 2 square miles (5 square km) in the Black Hills.
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