Riffraff vs. Riprap

Riffraffnoun

The rabble; crowds; the common people.

Riffraffnoun

Sweepings; refuse.

Riffraffnoun

Sweepings; refuse; the lowest order of society.

Riffraffnoun

disparaging terms for the common people

Riprapnoun

An underwater bank seen as a danger to shipping.

Riprapnoun

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

Riprapverb

To form a riprap in or upon.

Riprapnoun

A foundation or sustaining wall of stones thrown together without order, as in deep water or on a soft bottom, or in a river channel.

Riprapverb

To form a riprap in or upon.

Riprap

Riprap (in North American English), also known as rip rap, rip-rap, shot rock, rock armour (in British English) or rubble, is human-placed rock or other material used to protect shoreline structures against scour and water, wave, or ice erosion. Ripraps are used to armor shorelines, streambeds, bridge abutments, foundational infrastructure supports and other shoreline structures against erosion.