rockslide

The word is a modern English compound, transparently combining two native Germanic elements. 'Rock', with a history traceable to Old English, signifies the solid mineral matter. 'Slide', also from Old English, conveys the motion of slipping or gliding downward. The compound 'rockslide' logically and literally describes the specific geological event where rocks move rapidly down a slope, a meaning that has remained consistent since its formation. It exemplifies the productive Germanic pattern of creating precise, descriptive nouns by joining two existing words.

Structure: rock (stone) + slide (glide down) - rock: From Old English rocc, of uncertain origin, possibly from a Celtic source. Functions as the noun base, denoting the material involved. - slide: From Old English slīdan (to glide, slip). Functions as the verb-derived element, denoting the action or event.