A headfirst fall or jump. / (aviation) A drop in altitude with the nose of the craft angled downwards. / (economics, etc.) A rapid fall, e.g. in price or value.

(intransitive, of aircraft) To dive down in a steep angle. / (intransitive, economy) To perform a rapid fall in price or value.

plural of nosedive

Third-person singular simple present indicative form of nosedive

(in combinations) The state or quality of having a particular number of or type of nose.

simple past tense and past participle of nosedive