plumb line
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plumb line
n.
1. A line from which a weight is suspended to determine verticality or depth.
2. An imaginary line regarded as directed exactly toward the earth's center of gravity.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
plumb line
n
1. (Navigation) a string with a metal weight at one end that, when suspended, points directly towards the earth's centre of gravity and so is used to determine verticality, the depth of water, etc
2. (Building) another name for plumb rule
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
plumb′ line`
n.
1. a cord with a lead bob attached to one end, used to determine perpendicularity, the depth of water, etc. Compare plumb (def. 1).
2. plumb rule.
[1530–40]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Noun | 1. | plumb line - a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point cord - a line made of twisted fibers or threads; "the bundle was tied with a cord" lead line, sounding line - (nautical) plumb line for determining depth plumb rule - a plumb line attached to a narrow board |
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Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995