rockfall

Etymology

From rock + fall.

rockfall means A quantity of rocks that has fallen from a cliff etc. Lexicurio rates it Sui generis — a strength score of 86 out of 100.

noun

A quantity of rocks that has fallen from a cliff etc.“A 200-ton rockfall recently blocked the Machynlleth sidings, trapping several locomotives; a rock-slip on the approach embankment to Talerddig required expensive revetting last year; and on the coastal section to Barmouth an 80 foot-high stone revetment was completed some time ago at Friog; [...].”