There isn't a specific term for rock-filled rapids in the Nile River. The Nile River does have rapids, but they are not typically known for being filled with rocks in the way you might imagine.

Here's why:

* The Nile's Rapids: The Nile River has rapids primarily in the upper Nile region, particularly in the White Nile and the Blue Nile. These rapids are formed due to the river's descent through mountainous regions.

* Types of Rapids: The rapids in the Nile are generally characterized by rocky sections, churning water, and often strong currents, but they are not usually dominated by large, protruding rocks like you might see in other rivers.

* Regional Names: Some specific rapids in the Nile might have local names based on their location or unique features.

If you're looking for a specific term, you could refer to them as:

* Nile Rapids: This is a general term that accurately describes the feature.

* Rapids of the Nile: This is another way to refer to them.

Let me know if you're interested in learning more about specific rapids on the Nile River, and I can help you find more information!