From Longman Dictionary of Contemporary Englishnosedivenose‧dive1 /ˈnəʊzdaɪv $ ˈnoʊz-/ noun [countable] 1 BLESSa sudden very large fall in the price, value, or condition of something The pound took a nosedive on the foreign exchange market today. The economy went into a nosedive.2 TTAa sudden steep drop made by a plane with its front end pointing towards the ground Everyone screamed as the plane suddenly went into a nosedive.
Examples from the Corpus
nosedive• I was off-balance, falling forward, lurching with giant strides, certain that the next step would end in a nosedive.• The plane suddenly went into a nosedive.• The Cfund, for that one month, took a nosedive.• The world's stock markets crash in the biggest nosedive since 1929.• There is surely a new formula here for those who wish to break out of the global environmental nosedive.took a nosedive• The dollar took a nosedive early in trading today.• The Cfund, for that one month, took a nosedive.nosedivenosedive2 verb [intransitive] 1 BLESSif a price, value, or condition of something nosedives, it suddenly goes down or gets much worse SYN plummet Sales have nosedived since January.2 TTAif a plane nosedives, it drops suddenly and steeply with its front end pointing towards the ground→ See Verb tableFrom Longman Business Dictionarynosedivenose‧dive /ˈnəʊzdaɪvˈnoʊz-/ verb [intransitive, transitive] if sales, exports, shares etc nosedive, their value or number falls suddenly and by a large amountIn Hong Kong, stocks nosedived in active trading.The corporate banking unit’s profit nosedived 74%, to $20 million. —nosedive noun [countable]The U.S. currency began its nosedive late in the morning.→ See Verb table 