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pointing

[poin-ting] /ˈpɔɪn tɪŋ/
noun
1.
(in masonry) mortar used as a finishing touch to brickwork.
Origin
1835-1845
1835-45; point + -ing1
Related forms
unpointing, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for unpointing

pointing

/ˈpɔɪntɪŋ/
noun
1.
the act or process of repairing or finishing joints in brickwork, masonry, etc, with mortar
2.
  1. the insertion of marks to indicate the chanting of a psalm or the vowels in a Hebrew text
  2. the sequence of marks so inserted
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for unpointing

pointing

n.

"the filling up of exterior faces of joints in brickwork," late 15c., verbal noun from point (v.). Meaning "action of indicating with the finger, etc." is from 1550s.

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for unpointing

pointing

in building maintenance, the technique of repairing mortar joints between bricks or other masonry elements. When aging mortar joints crack and disintegrate, the defective mortar is removed by hand or power tool and replaced with fresh mortar, preferably of the same composition as the original. Often an entire wall, or even a whole structure, is pointed because defective points cannot easily be detected, and adjacent joints may also be in need of repair. The mortar is packed tightly in thin layers and tooled to a smooth, concave, finished surface. Tuck-pointing is a refinement of pointing, by which sharply defined points are formed for decorative purposes.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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