nose·dive

[nohz-dahyv] noun, verb, nose·dived or nose·dove, nose·dived, nose·div·ing.
noun Also, nose dive.
1.
a plunge of an aircraft with the forward part pointing downward.
2.
a sudden sharp drop or rapid decline: a time when market values were in a nosedive.
verb (used without object) Also, nose-dive.
3.
to go into a nosedive: a warning that prices might nosedive.

Origin:
1910–15; nose + dive

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Slang Dictionary

nosedive definition


  1. n.
    a great drop; a great decline. (As with a bird or an airplane diving—nose first—toward the ground. See also take a nosedive.) : This year our profits have taken a nosedive.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
Cite This Source
00:10
Nosedive is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Example sentences
One of the wings snapped, sending his prized plane into a nosedive for the ice.
As population density increases or is perceived to have increased, empathy in
  that society takes a nosedive.
Fascinatingly, this nosedive appears to be affixed to a particular starting
  point.
In this particular lesson the flight instructor cut the small plane's engine
  and put the plane into a nosedive.
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