What is the meaning of Riprap?

An underwater bank seen as a danger to shipping.

Rocks or other materials used to shore up an embankment, deter or prevent erosion, guide shipping, or serve as a temporary mooring.

To form a riprap in or upon.

a riprap rocks or other materials used to shore up an embankment, deter or prevent erosion, guide shipping, or serve as a temporary mooring

Source: wiktionary.org

See also