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The Collaborative International Dictionary
drop-off

drop-off \drop-off\ n.

  1. a noticeable decline in performance; as, a drop-off in attendance. [WordNet sense 1]

    Syn: slump, falloff, falling off.

  2. a steep high face of rock.

    Syn: cliff. [WordNet sense 2]

  3. a change downward; as, there was a sharp drop-off in sales. [WordNet sense 3]

    Syn: decrease, lessening.

Wiktionary
drop-off

n. 1 A sudden downward slope 2 A sudden decrease (such as in the level of sales)

WordNet
drop-off
  1. n. a noticeable deterioration in performance or quality; "the team went into a slump"; "a gradual slack in output"; "a drop-off in attendance"; "a falloff in quality" [syn: slump, slack, falloff, falling off]

  2. a steep high face of rock; "he stood on a high cliff overlooking the town"; "a steep drop" [syn: cliff, drop]

  3. a change downward; "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales" [syn: decrease, lessening] [ant: increase]

Usage examples of "drop-off".

He spoke, too, about deconfliction, because there were going to be air raids going in on surrounding targets--a number of fixed-launch sites were going to be hosed down within 6 miles of our drop-off point.

She said, "The yacht Billy Teeter spotted the night you and Joey saw the drop-off is registered to a corporation in Tampa called Products Americas, Inc.

In another twenty-five paces they reached the drop-off the crestless slaves stood next to.

         A large grass-covered field edged to the sheer drop-off of the shelf, though the soil layer, evidenced by a couple of shallow cooking pits that went down to rock, was not deep.

It could conceal sudden drop-offs or spikes of hard rock that could open the belly of a crawler like a fish knife.

To the right stood a low steel guard rail, and just beyond it was a rocky drop-off that fell seventy feet into a wooded ravine.

He asked for an envelope and a stamp, and the librarian pointed silently down the hall toward the tiny room that served as the mail drop-off and pick-up point.

The four of us were picking our way down the slope, unroped, lost in our own thoughts and in the not-unpleasant haze of exhaustion so common near the end of a climb, when K just came loose—perhaps he tripped over one of his own hindlegs, although he denied that later—and ended up on his stomach—or at least the bottom of his upper shell, all six legs spraddled, ice axe flying free, starting a slide that would have been harmless enough for the first hundred yards or so if it had not been for the drop-off that fell away to the glacier still a thousand feet directly below.