Plummet



GRE 蓝宝 Barron

解释

GRE 红宝书

• v. 垂直或突然地坠下
• ［英］ v. 垂直或突然地坠下 ( to fall perpendicularly or abruptly)
• ［记］ plummet原意为""测深锤""

Webster Collegiate

I. noun

• Etymology: Middle English plomet, from Anglo-French plumet, plomet, from plum lead, lead weight — more at plumb
• Date: 14th century
• plumb; also plumb line

II. intransitive verb

• Date: 1937
• 1. to fall perpendicularly <birds plummeted down>
• 2. to drop sharply and abruptly <prices plummeted>

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