riprap /ˈɹɪpɹap/noun 2verb 1forms 3 noun2 •(US, Canada) Rocks or other materials used to shore up an embankment, deter or prevent erosion, guide shipping, or serve as a temporary mooring. •An underwater bank seen as a danger to shipping.They hold on, spray flying, the ceaseless racket of water impacting on rock all but swallowing them, the river pitching dizzily, snags and riprap raking like claws at the bottom of the boat. — 1982 verb1 •To form a riprap in or upon. formsriprapped · riprapping · ripraps
