[no obj.]fall or drop straight down at high speed
快速落下,陡直落下
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a climber was killed when he plummeted 300 feet down an icy gully .一位登山者从300英尺高处陡然掉到一个冰谷里给摔死了。
decrease rapidly in value or amount
(在价值或数量上)骤然下跌,陡然下降
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hardware sales plummeted .硬件销售量陡然下降。
a steep and rapid fall or drop
骤跌,陡跌,骤降。
a plumb or plumb line
铅锤,测深锤;铅锤线,测深锤线。
"late Middle English (as a noun): from Old French