[sand-blast, -blahst]
a blast of air or steam laden with sand, used to clean, grind, cut, or decorate hard surfaces, as of glass, stone, or metal.
the apparatus used to apply such a blast.
verb (used with object), verb (used without object)
to clean, smooth, etc., with a sandblast.

1870–75; sand + blast

sandblaster, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
sandblast (ˈsændˌblɑːst)
1.  a jet of sand or grit blown from a nozzle under air, water, or steam pressure
2.  to clean, grind, or decorate (a surface) with a sandblast

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
Sandblast artists wear heavy protective clothing and helmets that cover the head and fit down over the shoulders.
Sandblast clean all exposed reinforcing steel and concrete surfaces before placing new concrete.
Also, leaves are more sensitive to sandblast damage than stems and leaf residues decompose faster.
Sandblast clean all precast surfaces prior to placement of the rapid setting concrete.
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