plummet

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plummet

a lead plumb used by anglers to determine the depth of water

plummet

[′pləm·ət]
(engineering)
A loose-fitting metal plug in a tapered rotameter tube which moves upward (or downward) with an increase (or decrease) in fluid flow rate upward through the tube. Also known as float.

plumb bob, plummet

A shaped metal weight which is suspended from the lower end of a line to determine the vertical. (See illustration p. 744.)
References in periodicals archive ?
TOUCH TIMES: Around 850 staff at Bellway were axed last year as demand plummeted DOWNTURN: The average property price is pounds 160,000
Labor's share (the ratio of personnel costs to added value) at large firms has plummeted in recent years due to restructuring drives.
But their tax burden plummeted over the same period.
Most dramatically, though sublease space declined 4% throughout Fairfield from the end of last year, Greenwich sublets plummeted 74% due primarily to Andor Capital Management's 144,340 SF commitment at Greenwich American Centre.
Intel, whose stock price has plummeted along with the stocks of most other high-tech companies, announced a move to large-volume fabrication of 90-nanometer (.
First half operating profits at Ito-Yokado's supermarket division plummeted 42% while profits at its 7-Eleven c-store chain rose 4%.
According to Laura Ashley, the "noted media pioneer, educator, philanthropist, and religious broadcaster" owns about 2 million shares and offers an understanding of the North American consumer market, where sales have plummeted in recent years.
The actress, who has denied recent rumours that she is pregnant, dropped to her knees and prayed with another woman after their lift got stuck on the 37th floor - and then suddenly plummeted 10 levels.
When vehicles produced at Japanese automakers' plants overseas and imported back home are included, sales of imported vehicles during the year ended March 31 plummeted 26.
He had plummeted from the 3000ft-plus Aonach Eagach ridge in Glencoe.
The company said last week that same-store sales, a key gauge of retail performance, declined 13 percent in the fiscal fourth quarter as sales of projection televisions plummeted.
A stewardess suffered a suspected broken hip when the easyJet plane carrying Lucy and David Westbrooke plummeted during thunderstorms over Italy.