ˈ ̷ ̷ˌ ̷ ̷ noun
Usage: often attributive
Etymology: out (III) + wash (after wash out, v.)
1.
a. : detritus chiefly consisting of gravel and sand carried by running water from the melting ice of a glacier and laid down in stratified deposits : glaciofluvial drift
b. : meltwater from a glacier
2. : soil material washed down a hillside by rainwater and spread upon the more gently sloping adjacent land