Aggrade
Pronunciation : Ag*grade"
Part of Speech : v. t. [imp. & p. p. Aggraded; p. pr. & vb. n. Aggrading.] (Phys. Geog.)
Definition : Defn: To bring, or tend to bring, to a uniform grade, or slope, by addition of material; as, streams aggrade their beds by depositing sediment.
Source : Webster's Unabridged Dictionary, 1913