scree
Scree (noun) means Loose broken stones lying on a slope.
Etymology
Probably a back-formation from screes, from Old Norse skriða ("landslide, landslip"); compare skríða ("to glide"), from Proto-Germanic *skrīþaną ("to crawl; to glide; to walk"), from Proto-Indo-European *(s)kreyt-, *(s)ker- ("to bend, turn"). It is cognate with Icelandic skriða ("avalanche; landslide, landslip; steep mountain- or hillside made up of gravel and loose rocks").