from G1223 and G4650; to dissipate, i.e. (genitive case) to rout or separate; specially, to winnow; figuratively, to squander:--disperse, scatter (abroad), strew, waste.
to scatter abroad, disperse, to winnow
to throw the grain a considerable distance, or up into the air, that it may be separated from the chaff
to gather the wheat, freed from the chaff into the granary