/drop"awf', -of'/ , n.
1. a vertical or very steep descent: The trail has a drop-off of several hundred feet.
2. a decline; decrease: Sales have shown a considerable drop-off this year.
3. a place where a person or thing can be left, received, accommodated, etc.: a new drop-off for outpatients.
adj.
4. applied when a rented vehicle is left elsewhere than at the point of hire: to pay a drop-off charge.
[ 1955-60; n., adj. use of v. phrase drop off ]