nose·dive/`nozˏdaɪv; ˈnəʊzdaɪv/ n 1 take a nosedive if amounts, prices etc take a nosedive, they suddenly fall 〔数量、价格等〕猛跌,骤降: Profits took a nosedive last year. 去年利润骤降。 2 [C] a sudden steep drop by a plane, with its front end pointing towards the ground 〔飞机的〕俯冲