General "sliver":
* Éclat: This is the most common and general term for "sliver." It can refer to a small, thin piece of something that has been broken off, or to a flash of light.
Other possibilities:
* Lamelle: This translates to "thin plate" or "lamina" and can be used for a thin, flat piece of something, like a sliver of wood.
* Fissure: This refers to a crack or split, and can be used for a sliver in something solid.
* Morceau: This means "piece" or "fragment" and can be used for a sliver if it's not too small.
The best translation will depend on the specific context of the sliver you are referring to.