Definition of "drop-off"

drop-off

noun
plural drop-offs
1. A sudden downward slope.
  1. The precipitous outer side of a coral reef, facing the open sea.
2. A sudden decrease.
3. A delivery; the act of leaving a package, etc.
  Quotations
  Starting tomorrow, they'd do dropoffs and pickups instead of leaving their vehicles unguarded.
  2014, K. G. MacGregor, Anyone But You
4. (especially US) A space reserved outside a bus or railway station for vehicles stopping to drop off passengers for onward transit.
  Quotations
  Fifty car parking spaces, a drop-off point, five spaces for blue badge holders and lighting masts are all included in the plan, as is cycle parking on the station forecourt and ticket vending machines.
  2020 May 20, “Network News: Plan submitted for £18.6 million station at Soham”, in Rail, page 21
5. A time during which passengers, such as school children, are dropped off.
  Quotations
  These signs are friendly reminders for road users to slow down during drop-off and pick-up.
  2021 February 1, Living in Brisbane, Brisbane, page 1
6. (Internet) A visitor to a website who ceases to continue using and navigating around the site after reaching some specified page; or such an act of cessation.