Dreye權威釋義|plummet

n.

vi.

筆直落下
暴跌；重挫
His stock plummeted for no good reason; he decided to take the plunge and restart again.
他的股票沒理由重挫之後，他決定接受這個跌落並重新開始。

同義參見:

以上來源於：《英漢大辭典》

v.

(plummets, plummeting, plummeted)

fall or drop straight down at high speed.

▸decrease rapidly in value or amount.

n.

ME: from OFr. plommet ‘small sounding lead’, dimin. of plomb ‘lead’.

以上來源於：《簡明牛津英語詞典》