plummetting

['pl?m?t]
n.
=plumb bob
= plumb
(釣魚用)鉛墜
重荷；壓抑物
vi.
垂直落下；驟然跌落：
The damaged airplane plummeted towards the earth.
受損的飛機一頭朝地面栽去。
(價格、水平等)驟然下跌；大幅落下：
House prices have plummeted in this area.
此地房價驟然大跌。