drop-off \ˈ ̷ ̷ˌ ̷ ̷\noun (-s) Etymology: from drop off, v. : a very steep or perpendicular drop or descent < shoals here at the drop-off are referred to as the outer reefs — P.A.Zahl > < a climb of many short turns and dizzy drop-offs — C.F.Saunders >