GRE knoll Definition A small, rounded hill or mound. 日本語 小さな丸い丘や丘陵 Example "They had a picnic on the sunny knoll overlooking the valley." Sign in to save GRE Quiz → ← knob knot → Study tips featuring "knoll" Group Words Together by Emotional Tone Force Contrast Between Two Similar Words Uncover the Hidden Stories Behind GRE Words Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant